I'm sure we all agree Aggron needed a revamp in a major way. For the revamp I did quite a few things:
Status: Finished, needs Grammar Checks.
www.smogon.com/dp/pokemon/aggron
[SET]
name: Rock Polish
move 1: Rock Polish
move 2: Head Smash
move 3: Aqua Tail
move 4: Low Kick / Ice Punch
item: Life Orb
nature: Adamant / Jolly
evs: 252 Atk / 4 Def / 252 Spe
[SET COMMENTS]
<p>With Head Smash and a very respectable Attack stat, the only thing stopping Aggron from plowing through teams is its poor Speed. Of course, this can be remedied by Rock Polish, which boosts Aggron's Speed to a whopping 398, outrunning Pokemon like Dugtrio, Alakazam, and Sceptile, even with a Speed boosting nature. It also out paces neutral nature base 80s after Choice Scarf. With a Jolly nature, Aggron is faster than base 80s after Choice Scarf and a Speed boosting nature, but it really appreciates the power from Adamant, as it secures 2HKOs on Tangrowth and Regirock, while giving Aggron a much higher chance of OHKOing Rhyperior.</p>
<p> Aggron needs to focus on super effective coverage, as Head Smash is so powerful that it will do more than almost any other attack even when resisted. Aqua Tail 2HKOes Donphan and OHKOes almost every Rock/Ground-type, which are Aggron's most common switch-ins. Low Kick 2HKOes Regirock and can KO Registeel if it switches into Stealth Rock and a Head Smash. Ice Punch can be used over Low Kick if you prefer beating Torterra, who is KOed after switching into Head Smash.</p>
<p>Aggron has trouble with different Pokemon depending on what it uses in its last move slot. If Aggron uses Low Kick, Torterra will cause some serious trouble. This is easily remedied by using something like Venusaur to switch in and hit Torterra with a strong Sludge Bomb, or better yet using something like Swords Dance Leafeon to set up on Torterra. If Aggron uses Ice Punch, it will have some trouble with Regirock and Registeel. Registeel is pretty easy to deal with by using something like Donphan or even Torterra to switch in and set up Stealth Rock. Dugtrio can come in and trap it as well. Regirock is more difficult as it hits much harder, meaning you need to carry something with respectable defenses that resists Stone Edge and is preferably immune to Thunder Wave. Torterra and Donphan are still both good choices, but Dugtrio isn't powerful enough to trap and KO Regirock as long as it has a decent amount of HP. Using something like Blaziken or Arcanine to break the opponent's walls makes it a lot easier for Aggron to sweep as well, since they will weaken or KO bulky Water-types such as Slowbro and Milotic, while possibly also taking care of Dugtrio with priority.</p>
<p>Aggron definitely benefits from Spikes support as well, because it can then use a Jolly nature, making it less susceptible to Choice Scarf revenge killers. Qwilfish is a pretty good partner, being able to switch into weak Fighting-type attacks and setting up. Claydol is also a great teammate, as it not only sets up Stealth Rock and screens, but it also easily takes Fighting and Ground-type attacks.</p>
[SET]
name: SubPunch
move 1: Substitute
move 2: Head Smash
move 3: Focus Punch
move 4: Magnet Rise
item: Leftovers
nature: Adamant
evs: 160 HP / 252 Atk / 92 Spe
[SET COMMENTS]
<p>Aggron has some decent bulk with some HP investment, especially on the physical side, allowing it to easily set up a Substitute on many Pokemon. It also helps that Aggron has quite the ability to force switches with its dangerous 150 Base Power Head Smash attack. The major thing holding Aggron back is its 4x weakness to the ever-common Ground-type attacks, so that's where Magnet Rise comes in. With Magnet Rise, Aggron is barely touchable by its usual counters, who rely on Earthquake to hit Aggron. This means Pokemon like Donphan will be forced to use Stone Edge, which merely 3HKOes Aggron's Substitute. Pokemon like Steelix and Donphan are also hit hard by Focus Punch, another 150 Base Power move (though it lacks STAB). The strategy is pretty straightforward; you come in on one of the many attacks that Aggron resists and set up a Substitute. If the opponent switches in something like the previously mentioned Donphan or Steelix, use Magnet Rise. Proceed to destroy your opponent's team from behind your Substitute with Head Smash and Focus Punch. If your opponent has Roar on their Steelix or Donphan, it may be wise to just use Focus Punch instead of Magnet Rise, especially if you have used Magnet Rise earlier in the match.</p>
<p>The EVs may look a little odd at first glance, but the Speed EVs are very beneficial. 92 Speed makes sure that you outrun Donphan, who often runs 88 Spe EVs to beat out other base 50 Speed Pokemon and others like Clefable and Omastar. This also helps versus Brave Cloyster who runs Surf and would otherwise break your Substitute or even OHKO before you can OHKO it. 160 HP EVs gives you a Substitute number (Leftovers number plus one more HP), meaning you can Substitute more times consecutively.</p>
<p>This set is exceptional with residual damage. It forces switches with Magnet Rise, and Stealth Rock and Spikes turn many 2HKOes into OHKOes, such as against Venusaur. Sandstorm support is also great; it gives Aggron an impressive Special Defense stat to go along with its decent defensive typing. This means Aggron will be able to set up Substitutes on more Pokemon.</p>
<p>Since this is essentially a lure for physically defensive Pokemon, Aggron makes a great Pokemon to use alongside Pokemon such as Swellow or Ambipom. With Donphan, Regirock, Registeel, or Steelix out of the way, Swellow and Ambipom can abuse their Speed and powerful Normal-type attacks. Unfortunately, while Aggron has great resistances and Defense, it still has trouble with Water and Fighting-type attacks. This makes Slowbro and Slowking great teammates for this Aggron set, as they easily fend off both of those attacking types while also spreading paralysis, which always helps any Pokemon with Substitute.</p>
[SET]
name: Choice Band
move 1: Head Smash
move 2: Aqua Tail
move 3: Low Kick
move 4: Ice Punch
item: Choice Band
nature: Jolly / Adamant
evs: 252 Atk / 4 Def / 252 Spe
[SET COMMENTS]
<p>With Choice Band and a Jolly nature, Aggron reaches an astounding 478 Attack. Aggron is easily capable of switching into battle thanks to its numerous resistances. Head Smash is Aggron's main form of attack due to its absurd Base Power, good offensive typing, and STAB. Aqua Tail pairs nicely with Head Smash, hitting those Pokemon hoping to switch into a Rock attack (such as Rock/Ground-types) for super effective damage. Low Kick nails Pokemon like Steelix, Regirock, and Registeel for an easy 2HKO, while Ice Punch destroys Torterra.</p>
<p>With a Jolly nature, Aggron will almost always outrun defensive Milotic, and basically any other defensive Pokemon. However, an Adamant nature is viable, boosting Aggron's Attack to 525, meaning Aggron will hit that much harder. Aggron still outpaces most of the walls in UU, but there are defensive Pokemon such as Milotic and Venusaur who can easily be faster than Aggron with just 8 or 12 EVs invested in Speed.</p>
<p>With a Choice Band, Aggron becomes a major threat even in the OU metagame, hitting even the most defensive walls for heavy damage with Head Smash or coverage moves. However, in OU, Aggron should probably run Earthquake over Aqua Tail to hit Metagross hard on the switch.</p>
<p>Since Aggron will always be locked into an attack, it needs much more defensive support than the other two sets. Pokemon like Donphan and Steelix easily force Aggron out if it's using Head Smash, so using something like Tangrowth or Slowbro to take the physical hits with ease and hit back with STAB attacks is a good idea.</p>
<p>On the offensive side, Aggron will easily clear the path for almost any physical attacker, since a Choice Band boosted STAB Head Smash will 2HKO or even OHKO many physical walls.</p>
<p>In OU, Aggron has some trouble with Swampert due to its high Defense and resistance to Head Smash. This makes Zapdos a great teammate for Aggron, with its immunity to Earthquake, high defenses, and the option of Hidden Power Grass.</p>
[Other Options]
<p>Aggron could run a more defensive set with sandstorm support, but it is almost always outclassed by other bulky Rock-types due to its low HP. Stealth Rock is also an option as a filler, but Aggron will almost always be doing more harm by crushing the opponent with Head Smash.</p>
<p>Iron Tail is an option as well, especially if you pair Aggron with Gravity to compensate for its poor accuracy. It has decent coverage with Head Smash and has a chance to lower the target's Defense.</p>
<p>A decent Trick Room set could be used since Aggron is slow and hits like a mack truck; Head Smash will destroy almost anything that doesn't resist it. The trouble is when Trick Room isn't up, Aggron is too specially frail to do do anything without getting OHKOed first. Even with Aggron's horrible Speed, Choice Scarf is a viable option. With a Choice Scarf, Aggron can outrun Pokemon with base 95 Speed, and it still hits hard enough to 2HKO Milotic after Stealth Rock.</p>
[EVs]
<p>Max Attack is recommended on most sets. For Rock Polish and Choice Band, max Speed is quite important. With an Adamant nature and max Speed, Aggron will outrun Milotic as long as it doesn't invest in Speed. Aggron also appreciates the ability to outpace Donphan, Omastar, Registeel, Regirock, and others. On the SubPunch set, Aggron needs 92 Speed EVs to always be faster than Donphan and Brave Cloyster, who will otherwise OHKO or break Aggron's Substitute before it gets to move. Luckily, the 160 leftover EVs can be put in HP to give Aggron a Substitute number.</p>
[Team Options]
<p>Aggron works best when used with a sandstorm. In UU, unfortunately Hippopotas is the only option to set up sandstorm, but it at least can support Aggron with Stealth Rock as well. Speaking of Stealth Rock, Aggron will force a ton of switches regardless of which set it is using, so residual damage of any kind is beneficial.</p>
<p>Offensively, Aggron will clear the path for fast and frail physical sweepers such as Swellow and Ambipom. With its monstrous attack and Head Smash's absurd Base Power, Aggron can destroy many of the common physical walls in UU. If you are aiming to sweep with Aggron, using Pokemon such as Blaziken to clear out some of the physical walls is a good idea. Packing a strong Pursuit user to get rid of Claydol is also recommended.</p>
<p>On the defensive side, Aggron will need some support to cover its weaknesses. Almost any special Water-type attack will OHKO Aggron outside of sandstorm, and special attacks in general hurt Aggron. This makes Chansey and Clefable great teammates for Aggron since they can take special hits quite easily, while also being able to set up Stealth Rock and spread paralysis. Clefable can also Encore a Pokemon to help Aggron set up. Mismagius and Rotom have amazing synergy with Aggron, since they resist each other's weaknesses, except for Aggron's Water weakness. Altaria is also a great partner since it is the only Pokemon with resistances to every one of Aggron's weaknesses.</p>
<p>When used in OU, Aggron should almost always be used with Hippowdon because of the benefits of sandstorm. Latias and Celebi also have great synergy with Aggron. Both can easily switch in on Ground-, Water-, and Fighting-type attacks aimed at Aggron, while Aggron can take Dark-, Bug-, and Ice-type attacks aimed at Celebi and Latias. Salamence can also come in on many of Aggron's weaknesses and take advantage of the fact that Aggron will weaken walls such as Swampert.</p>
[Opinion]
<p>Aggron is a neat Pokémon with good stat distribution and a good movepool—it is just hampered by two terrible 4x weaknesses to very common attack types. It is usable in OU play, but it is in the UU environment where Aggron can be a real force, battering everything in sight with its STAB Head Smash from its impressive base 110 Attack.</p>
<p>What sets Aggron apart from other Rock-types is its Steel-typing. This gives Aggron a whole slew of resistances, which means it will have an easier time switching in than most Rock-types.</p>
[Counters]
<p>Switching into a 225 Base Power (factoring in STAB) attack, off of an Attack stat of 350, is no easy task. Resisting Head Smash isn't enough; you need to resist it and have impressive defense. Donphan, Nidoqueen, and Claydol wall Aggron's Fighting and Rock attacks, but they need to beware of Choice Band Ice Punch and Aqua Tail. Milotic can switch in and OHKO Aggron if it packs 8 Speed EVs to outrun Aggron as well. Hitmontop can switch into Head Smash after an Intimidate and OHKO with a STAB Fighting attack. Quagsire and Gastrodon are only 3HKOed by Aggron's Head Smash as long as there are no Spikes on the field, and they can Recover and set up Curse. In OU, Swampert and Hippowdon are the two best counters since they resist Head Smash and aren't hit too hard by Aggron's coverage moves. They can both send STAB Earthquakes at Aggron, which will easily OHKO.</p>
<p>Revenge killing is far easier, especially if Rock Polish isn't in effect. Any Pokemon with a super effective special attack, or simply any Fighting or Ground-type attack, will easily OHKO Aggron. Vacuum Wave works great if you need to revenge kill Aggron after Rock Polish, since it will likely not be able to survive it as long as it's coming from a decent Special Attack stat. Mach Punch will do well too, but Aggron can survive as long as it has a decent amount of HP left.</p>
<p>Most neutral special attacks will do good damage; just beware of Aggron's high attack power when using frail special sweepers.</p>
- Removed Metal Burst and Support sets
- Completely changed SubPunch and Choice Band to better reflect Aggron's niche and strengths in the current metagame
- Obviously replaced Stone Edge with Head Smash
- Added a Rock Polish set
- Added Team Options Paragraphs and section.
- Re-wrote EVs, Counters, Other Options, and most of Opinion.
Status: Finished, needs Grammar Checks.

www.smogon.com/dp/pokemon/aggron
[SET]
name: Rock Polish
move 1: Rock Polish
move 2: Head Smash
move 3: Aqua Tail
move 4: Low Kick / Ice Punch
item: Life Orb
nature: Adamant / Jolly
evs: 252 Atk / 4 Def / 252 Spe
[SET COMMENTS]
<p>With Head Smash and a very respectable Attack stat, the only thing stopping Aggron from plowing through teams is its poor Speed. Of course, this can be remedied by Rock Polish, which boosts Aggron's Speed to a whopping 398, outrunning Pokemon like Dugtrio, Alakazam, and Sceptile, even with a Speed boosting nature. It also out paces neutral nature base 80s after Choice Scarf. With a Jolly nature, Aggron is faster than base 80s after Choice Scarf and a Speed boosting nature, but it really appreciates the power from Adamant, as it secures 2HKOs on Tangrowth and Regirock, while giving Aggron a much higher chance of OHKOing Rhyperior.</p>
<p> Aggron needs to focus on super effective coverage, as Head Smash is so powerful that it will do more than almost any other attack even when resisted. Aqua Tail 2HKOes Donphan and OHKOes almost every Rock/Ground-type, which are Aggron's most common switch-ins. Low Kick 2HKOes Regirock and can KO Registeel if it switches into Stealth Rock and a Head Smash. Ice Punch can be used over Low Kick if you prefer beating Torterra, who is KOed after switching into Head Smash.</p>
<p>Aggron has trouble with different Pokemon depending on what it uses in its last move slot. If Aggron uses Low Kick, Torterra will cause some serious trouble. This is easily remedied by using something like Venusaur to switch in and hit Torterra with a strong Sludge Bomb, or better yet using something like Swords Dance Leafeon to set up on Torterra. If Aggron uses Ice Punch, it will have some trouble with Regirock and Registeel. Registeel is pretty easy to deal with by using something like Donphan or even Torterra to switch in and set up Stealth Rock. Dugtrio can come in and trap it as well. Regirock is more difficult as it hits much harder, meaning you need to carry something with respectable defenses that resists Stone Edge and is preferably immune to Thunder Wave. Torterra and Donphan are still both good choices, but Dugtrio isn't powerful enough to trap and KO Regirock as long as it has a decent amount of HP. Using something like Blaziken or Arcanine to break the opponent's walls makes it a lot easier for Aggron to sweep as well, since they will weaken or KO bulky Water-types such as Slowbro and Milotic, while possibly also taking care of Dugtrio with priority.</p>
<p>Aggron definitely benefits from Spikes support as well, because it can then use a Jolly nature, making it less susceptible to Choice Scarf revenge killers. Qwilfish is a pretty good partner, being able to switch into weak Fighting-type attacks and setting up. Claydol is also a great teammate, as it not only sets up Stealth Rock and screens, but it also easily takes Fighting and Ground-type attacks.</p>
[SET]
name: SubPunch
move 1: Substitute
move 2: Head Smash
move 3: Focus Punch
move 4: Magnet Rise
item: Leftovers
nature: Adamant
evs: 160 HP / 252 Atk / 92 Spe
[SET COMMENTS]
<p>Aggron has some decent bulk with some HP investment, especially on the physical side, allowing it to easily set up a Substitute on many Pokemon. It also helps that Aggron has quite the ability to force switches with its dangerous 150 Base Power Head Smash attack. The major thing holding Aggron back is its 4x weakness to the ever-common Ground-type attacks, so that's where Magnet Rise comes in. With Magnet Rise, Aggron is barely touchable by its usual counters, who rely on Earthquake to hit Aggron. This means Pokemon like Donphan will be forced to use Stone Edge, which merely 3HKOes Aggron's Substitute. Pokemon like Steelix and Donphan are also hit hard by Focus Punch, another 150 Base Power move (though it lacks STAB). The strategy is pretty straightforward; you come in on one of the many attacks that Aggron resists and set up a Substitute. If the opponent switches in something like the previously mentioned Donphan or Steelix, use Magnet Rise. Proceed to destroy your opponent's team from behind your Substitute with Head Smash and Focus Punch. If your opponent has Roar on their Steelix or Donphan, it may be wise to just use Focus Punch instead of Magnet Rise, especially if you have used Magnet Rise earlier in the match.</p>
<p>The EVs may look a little odd at first glance, but the Speed EVs are very beneficial. 92 Speed makes sure that you outrun Donphan, who often runs 88 Spe EVs to beat out other base 50 Speed Pokemon and others like Clefable and Omastar. This also helps versus Brave Cloyster who runs Surf and would otherwise break your Substitute or even OHKO before you can OHKO it. 160 HP EVs gives you a Substitute number (Leftovers number plus one more HP), meaning you can Substitute more times consecutively.</p>
<p>This set is exceptional with residual damage. It forces switches with Magnet Rise, and Stealth Rock and Spikes turn many 2HKOes into OHKOes, such as against Venusaur. Sandstorm support is also great; it gives Aggron an impressive Special Defense stat to go along with its decent defensive typing. This means Aggron will be able to set up Substitutes on more Pokemon.</p>
<p>Since this is essentially a lure for physically defensive Pokemon, Aggron makes a great Pokemon to use alongside Pokemon such as Swellow or Ambipom. With Donphan, Regirock, Registeel, or Steelix out of the way, Swellow and Ambipom can abuse their Speed and powerful Normal-type attacks. Unfortunately, while Aggron has great resistances and Defense, it still has trouble with Water and Fighting-type attacks. This makes Slowbro and Slowking great teammates for this Aggron set, as they easily fend off both of those attacking types while also spreading paralysis, which always helps any Pokemon with Substitute.</p>
[SET]
name: Choice Band
move 1: Head Smash
move 2: Aqua Tail
move 3: Low Kick
move 4: Ice Punch
item: Choice Band
nature: Jolly / Adamant
evs: 252 Atk / 4 Def / 252 Spe
[SET COMMENTS]
<p>With Choice Band and a Jolly nature, Aggron reaches an astounding 478 Attack. Aggron is easily capable of switching into battle thanks to its numerous resistances. Head Smash is Aggron's main form of attack due to its absurd Base Power, good offensive typing, and STAB. Aqua Tail pairs nicely with Head Smash, hitting those Pokemon hoping to switch into a Rock attack (such as Rock/Ground-types) for super effective damage. Low Kick nails Pokemon like Steelix, Regirock, and Registeel for an easy 2HKO, while Ice Punch destroys Torterra.</p>
<p>With a Jolly nature, Aggron will almost always outrun defensive Milotic, and basically any other defensive Pokemon. However, an Adamant nature is viable, boosting Aggron's Attack to 525, meaning Aggron will hit that much harder. Aggron still outpaces most of the walls in UU, but there are defensive Pokemon such as Milotic and Venusaur who can easily be faster than Aggron with just 8 or 12 EVs invested in Speed.</p>
<p>With a Choice Band, Aggron becomes a major threat even in the OU metagame, hitting even the most defensive walls for heavy damage with Head Smash or coverage moves. However, in OU, Aggron should probably run Earthquake over Aqua Tail to hit Metagross hard on the switch.</p>
<p>Since Aggron will always be locked into an attack, it needs much more defensive support than the other two sets. Pokemon like Donphan and Steelix easily force Aggron out if it's using Head Smash, so using something like Tangrowth or Slowbro to take the physical hits with ease and hit back with STAB attacks is a good idea.</p>
<p>On the offensive side, Aggron will easily clear the path for almost any physical attacker, since a Choice Band boosted STAB Head Smash will 2HKO or even OHKO many physical walls.</p>
<p>In OU, Aggron has some trouble with Swampert due to its high Defense and resistance to Head Smash. This makes Zapdos a great teammate for Aggron, with its immunity to Earthquake, high defenses, and the option of Hidden Power Grass.</p>
[Other Options]
<p>Aggron could run a more defensive set with sandstorm support, but it is almost always outclassed by other bulky Rock-types due to its low HP. Stealth Rock is also an option as a filler, but Aggron will almost always be doing more harm by crushing the opponent with Head Smash.</p>
<p>Iron Tail is an option as well, especially if you pair Aggron with Gravity to compensate for its poor accuracy. It has decent coverage with Head Smash and has a chance to lower the target's Defense.</p>
<p>A decent Trick Room set could be used since Aggron is slow and hits like a mack truck; Head Smash will destroy almost anything that doesn't resist it. The trouble is when Trick Room isn't up, Aggron is too specially frail to do do anything without getting OHKOed first. Even with Aggron's horrible Speed, Choice Scarf is a viable option. With a Choice Scarf, Aggron can outrun Pokemon with base 95 Speed, and it still hits hard enough to 2HKO Milotic after Stealth Rock.</p>
[EVs]
<p>Max Attack is recommended on most sets. For Rock Polish and Choice Band, max Speed is quite important. With an Adamant nature and max Speed, Aggron will outrun Milotic as long as it doesn't invest in Speed. Aggron also appreciates the ability to outpace Donphan, Omastar, Registeel, Regirock, and others. On the SubPunch set, Aggron needs 92 Speed EVs to always be faster than Donphan and Brave Cloyster, who will otherwise OHKO or break Aggron's Substitute before it gets to move. Luckily, the 160 leftover EVs can be put in HP to give Aggron a Substitute number.</p>
[Team Options]
<p>Aggron works best when used with a sandstorm. In UU, unfortunately Hippopotas is the only option to set up sandstorm, but it at least can support Aggron with Stealth Rock as well. Speaking of Stealth Rock, Aggron will force a ton of switches regardless of which set it is using, so residual damage of any kind is beneficial.</p>
<p>Offensively, Aggron will clear the path for fast and frail physical sweepers such as Swellow and Ambipom. With its monstrous attack and Head Smash's absurd Base Power, Aggron can destroy many of the common physical walls in UU. If you are aiming to sweep with Aggron, using Pokemon such as Blaziken to clear out some of the physical walls is a good idea. Packing a strong Pursuit user to get rid of Claydol is also recommended.</p>
<p>On the defensive side, Aggron will need some support to cover its weaknesses. Almost any special Water-type attack will OHKO Aggron outside of sandstorm, and special attacks in general hurt Aggron. This makes Chansey and Clefable great teammates for Aggron since they can take special hits quite easily, while also being able to set up Stealth Rock and spread paralysis. Clefable can also Encore a Pokemon to help Aggron set up. Mismagius and Rotom have amazing synergy with Aggron, since they resist each other's weaknesses, except for Aggron's Water weakness. Altaria is also a great partner since it is the only Pokemon with resistances to every one of Aggron's weaknesses.</p>
<p>When used in OU, Aggron should almost always be used with Hippowdon because of the benefits of sandstorm. Latias and Celebi also have great synergy with Aggron. Both can easily switch in on Ground-, Water-, and Fighting-type attacks aimed at Aggron, while Aggron can take Dark-, Bug-, and Ice-type attacks aimed at Celebi and Latias. Salamence can also come in on many of Aggron's weaknesses and take advantage of the fact that Aggron will weaken walls such as Swampert.</p>
[Opinion]
<p>Aggron is a neat Pokémon with good stat distribution and a good movepool—it is just hampered by two terrible 4x weaknesses to very common attack types. It is usable in OU play, but it is in the UU environment where Aggron can be a real force, battering everything in sight with its STAB Head Smash from its impressive base 110 Attack.</p>
<p>What sets Aggron apart from other Rock-types is its Steel-typing. This gives Aggron a whole slew of resistances, which means it will have an easier time switching in than most Rock-types.</p>
[Counters]
<p>Switching into a 225 Base Power (factoring in STAB) attack, off of an Attack stat of 350, is no easy task. Resisting Head Smash isn't enough; you need to resist it and have impressive defense. Donphan, Nidoqueen, and Claydol wall Aggron's Fighting and Rock attacks, but they need to beware of Choice Band Ice Punch and Aqua Tail. Milotic can switch in and OHKO Aggron if it packs 8 Speed EVs to outrun Aggron as well. Hitmontop can switch into Head Smash after an Intimidate and OHKO with a STAB Fighting attack. Quagsire and Gastrodon are only 3HKOed by Aggron's Head Smash as long as there are no Spikes on the field, and they can Recover and set up Curse. In OU, Swampert and Hippowdon are the two best counters since they resist Head Smash and aren't hit too hard by Aggron's coverage moves. They can both send STAB Earthquakes at Aggron, which will easily OHKO.</p>
<p>Revenge killing is far easier, especially if Rock Polish isn't in effect. Any Pokemon with a super effective special attack, or simply any Fighting or Ground-type attack, will easily OHKO Aggron. Vacuum Wave works great if you need to revenge kill Aggron after Rock Polish, since it will likely not be able to survive it as long as it's coming from a decent Special Attack stat. Mach Punch will do well too, but Aggron can survive as long as it has a decent amount of HP left.</p>
<p>Most neutral special attacks will do good damage; just beware of Aggron's high attack power when using frail special sweepers.</p>