Garchomp got one of these threads, so...
Infernape, "The Flaming Chimp Of Death". Known for his speed, power, versatility and his ability to ruin days out at the Safari Zone by furiously masturbating in front of your children and flinging flaming turds at surprised onlookers. Monkeys are fun, aren't they?
So how do you stop this simian menace? Firstly, you need to work out his set. Infernape's versatility is one of his strongest assets, here's a couple of his likely sets.
All calculations are based on max Attack/Special Attack. Many prefer a speed boosting nature for Infernape, but it's better to be safe than sorry.
Physical Sweeper
Swords Dance
In Fight
Flare Drive
Stone Edge/Thunderpunch
Milotic With Max HP, a Bold Nature and 180+ Defense EVs she can survive an Adamant Swords Danced In Fight and easily OHKO with Surf.
Swampert No problem here. Max HP and 280 Defense is common on most Swampert, which is more than enough to take a boosted In Fight. Either STAB move finishes the monkey.
Slowbro Excellent. Even with only max HP he survives a Swords Danced Thunderpunch. Like Swampert, either STAB move downs Infernape.
Suicune No problem surviving a boosted In Fight or in OHKOing with a STAB Surf.
Salamence Only works for Thunderpunch variants. Intimidate and a resistance to both STAB moves means Salamence can take Infernape very well.
Dragonite Same as a Salamence, but without Intimidate.
Rhyperior Despite him technically being weak to Fighting, Hard Rock all but removes this. A massive defense stat and powerful STAB Earthquake make Rhyperior an excellent choice. Be sure to max out HP and Defense though.
Donphan/Hippowdon Both can take a boosted In Fight/Flare Drive and OHKO with Earthquakes.
Cresselia Can survive a Swords Danced Flare Drive and hit back with Psychic and/or paralyze with Thunder Wave.
Starmie Survives a predicted Thunderpunch (unboosted) and can outspeed and OHKO with Surf.
Vaporeon Requires maxed out HP and Defense, Bold nature to survive a Swords Danced In Fight.
Mixed Sweeper
Scheme
Flamethrower
Grass Rope
In Fight
Salamence Resists everything on this set. Aerial Ace, Earthquake or STAB Dragon attacks take Infernape down.
Dragonite See Salamence.
Gyarados Beware of repeated Grass Ropes when sending Gyarados in, they won't 2HKO without a boost though. Otherwise a decent counter.
Gardevoir/Gallade Both have excellent special defense to take boosted Flamethrowers. You'll need to invest some EVs to truly make either a counter. 320 HP is enough to survive although you may want some in special defense just to be on the safe side.
Charizard/Moltres Resist the whole moveset and can hit back with STAB Flying attacks.
Manaphy Takes pitiful damage from Grass Rope (Flamethrowers actually do more) and has the defenses to survive In Fights. Surf is an easy OHKO.
Milotic Shaky. While she only needs minor special defense EVs to survive a Schemed Grass Rope, any kind of previous damage and she's screwed. Can work, but not really recommended.
Cresselia Same with the physical set, she can survive boosted Flamethrowers more easily though.
Starmie Survives any unboosted hit. Outspeeds Infernape and OHKOs with Surf.
Vaporeon Grass Rope is only 60 BP against Vaporeon so he survives a Schemed hit with ease.
Grumpig Resists Fighting and Fire (Thick Fat) and a Schemed Grass Rope is a 3HKO with only max HP.
Special Sweeper
Scheme
Flamethrower
HP Ice
Grass Rope
Blissey Blissey walling a Fighter is just funny.
Snorlax Fatty survives easily, Thick Fat helps a lot. Throws STAB Normal attacks or Earthquakes back at the monkey.
Cresselia Works just as well as it does for the mixed set.
Manaphy Again, this works like it does for the mixed sweeper.
Starmie Survives any unboosted hit. Outspeeds Infernape and OHKOs with Surf.
Vaporeon Grass Rope is only 60 BP against Vaporeon so he survives a Schemed hit with ease.
Grumpig Resists Ice and Fire (Thick Fat) and a Schemed Grass Rope is a 3HKO with only max HP.
Non-boosting/Life Orb Mixed Sweeper
- Hidden Power [Ice]/Stone Edge
- Fire Blast/Flamethrower
- In Fight
- Grass Rope
Cresselia Walls this quite decently, however it will take a furious dent from Fire Blast, to the point you'd need to Moonlight.
Gyarados Only if you don't have Stone Edge. Practically destroys this.
Manaphy Works for all predominantly special sets.
Salamence Works if it's Stone Edge, to a certain extent.
Starmie Survives a Grass Rope. Outspeeds Infernape and OHKOs with Surf.
Charizard/Moltres Only for HP Ice variants.
Grumpig Resists Fighting, Ice and Fire (Thick Fat) and takes little damage from Grass Rope.
"Insurance"
These Pokemon can outspeed and kill Infernape, though may require a sacrifice to get in.
Starmie Needs a Timid nature, can easily OHKO.
Dugtrio Must be Jolly to outspeed all Infernape. Kills with Earthquake and even better, Infernape can't switch.
Aerodactyl Finishes Infernape with an Earthquake, can even afford to go Adamant and still outspeed it.
Azelf Like Starmie, you'll need a Timid nature to ensure you are faster. Psychic OHKOs no problem.
Please contribute any other vaild counters or specific movesets that should be considered. I'll edit them into this post for easy reference.
Infernape, "The Flaming Chimp Of Death". Known for his speed, power, versatility and his ability to ruin days out at the Safari Zone by furiously masturbating in front of your children and flinging flaming turds at surprised onlookers. Monkeys are fun, aren't they?
So how do you stop this simian menace? Firstly, you need to work out his set. Infernape's versatility is one of his strongest assets, here's a couple of his likely sets.
All calculations are based on max Attack/Special Attack. Many prefer a speed boosting nature for Infernape, but it's better to be safe than sorry.
Physical Sweeper
Swords Dance
In Fight
Flare Drive
Stone Edge/Thunderpunch
Milotic With Max HP, a Bold Nature and 180+ Defense EVs she can survive an Adamant Swords Danced In Fight and easily OHKO with Surf.
Swampert No problem here. Max HP and 280 Defense is common on most Swampert, which is more than enough to take a boosted In Fight. Either STAB move finishes the monkey.
Slowbro Excellent. Even with only max HP he survives a Swords Danced Thunderpunch. Like Swampert, either STAB move downs Infernape.
Suicune No problem surviving a boosted In Fight or in OHKOing with a STAB Surf.
Salamence Only works for Thunderpunch variants. Intimidate and a resistance to both STAB moves means Salamence can take Infernape very well.
Dragonite Same as a Salamence, but without Intimidate.
Rhyperior Despite him technically being weak to Fighting, Hard Rock all but removes this. A massive defense stat and powerful STAB Earthquake make Rhyperior an excellent choice. Be sure to max out HP and Defense though.
Donphan/Hippowdon Both can take a boosted In Fight/Flare Drive and OHKO with Earthquakes.
Cresselia Can survive a Swords Danced Flare Drive and hit back with Psychic and/or paralyze with Thunder Wave.
Starmie Survives a predicted Thunderpunch (unboosted) and can outspeed and OHKO with Surf.
Vaporeon Requires maxed out HP and Defense, Bold nature to survive a Swords Danced In Fight.
Mixed Sweeper
Scheme
Flamethrower
Grass Rope
In Fight
Salamence Resists everything on this set. Aerial Ace, Earthquake or STAB Dragon attacks take Infernape down.
Dragonite See Salamence.
Gyarados Beware of repeated Grass Ropes when sending Gyarados in, they won't 2HKO without a boost though. Otherwise a decent counter.
Gardevoir/Gallade Both have excellent special defense to take boosted Flamethrowers. You'll need to invest some EVs to truly make either a counter. 320 HP is enough to survive although you may want some in special defense just to be on the safe side.
Charizard/Moltres Resist the whole moveset and can hit back with STAB Flying attacks.
Manaphy Takes pitiful damage from Grass Rope (Flamethrowers actually do more) and has the defenses to survive In Fights. Surf is an easy OHKO.
Milotic Shaky. While she only needs minor special defense EVs to survive a Schemed Grass Rope, any kind of previous damage and she's screwed. Can work, but not really recommended.
Cresselia Same with the physical set, she can survive boosted Flamethrowers more easily though.
Starmie Survives any unboosted hit. Outspeeds Infernape and OHKOs with Surf.
Vaporeon Grass Rope is only 60 BP against Vaporeon so he survives a Schemed hit with ease.
Grumpig Resists Fighting and Fire (Thick Fat) and a Schemed Grass Rope is a 3HKO with only max HP.
Special Sweeper
Scheme
Flamethrower
HP Ice
Grass Rope
Blissey Blissey walling a Fighter is just funny.
Snorlax Fatty survives easily, Thick Fat helps a lot. Throws STAB Normal attacks or Earthquakes back at the monkey.
Cresselia Works just as well as it does for the mixed set.
Manaphy Again, this works like it does for the mixed sweeper.
Starmie Survives any unboosted hit. Outspeeds Infernape and OHKOs with Surf.
Vaporeon Grass Rope is only 60 BP against Vaporeon so he survives a Schemed hit with ease.
Grumpig Resists Ice and Fire (Thick Fat) and a Schemed Grass Rope is a 3HKO with only max HP.
Non-boosting/Life Orb Mixed Sweeper
- Hidden Power [Ice]/Stone Edge
- Fire Blast/Flamethrower
- In Fight
- Grass Rope
Cresselia Walls this quite decently, however it will take a furious dent from Fire Blast, to the point you'd need to Moonlight.
Gyarados Only if you don't have Stone Edge. Practically destroys this.
Manaphy Works for all predominantly special sets.
Salamence Works if it's Stone Edge, to a certain extent.
Starmie Survives a Grass Rope. Outspeeds Infernape and OHKOs with Surf.
Charizard/Moltres Only for HP Ice variants.
Grumpig Resists Fighting, Ice and Fire (Thick Fat) and takes little damage from Grass Rope.
"Insurance"
These Pokemon can outspeed and kill Infernape, though may require a sacrifice to get in.
Starmie Needs a Timid nature, can easily OHKO.
Dugtrio Must be Jolly to outspeed all Infernape. Kills with Earthquake and even better, Infernape can't switch.
Aerodactyl Finishes Infernape with an Earthquake, can even afford to go Adamant and still outspeed it.
Azelf Like Starmie, you'll need a Timid nature to ensure you are faster. Psychic OHKOs no problem.
Please contribute any other vaild counters or specific movesets that should be considered. I'll edit them into this post for easy reference.