Whereas Giratina is a wall that never dies, Giratina-O is an attacker that can puncture many holes in the opponent's team. He is arguably the best spinblocker in the game too, as his Levitate ability allows Giratina-O to switch in without being scathed by Spikes and Toxic Spikes. The addition of Shadow Sneak in Heart Gold and Soul Silver allows Giratina-O to also check many dangerous Ubers threats. His ability to break down stall teams with the Calm Mind set is a feat that very few other Pokemon can achieve. Immunity to Trick and the item removing effect of Knock Off is also quite exclusive and can prove to be very useful.
However, he does have some pretty disturbing weaknesses; Giratina-O only has base 90 Speed, which is quite slow for Ubers standards. He has weaknesses to the most common types in the Ubers metagame. And finally, his most fundamental flaw is his inability to hold anything else besides Griseous Orb, which is what Giratina-O is most often criticized for. The inability to hold any other items ruins what would otherwise be a Pokemon with amazing potential.
For those that play on Wi-Fi, it is a very annoying fact that Giratina-O can not be used in that environment, probably to allow compatibility for players using Diamond or Pearl. He can, however, be used in Link battles.
Say hello to the best spinblocker in the metagame. Giratina-O's impressive combination of power and bulk allows him to switch into Forretress with impunity, nullifying any attempts to Rapid Spin away entry hazards. Thanks to Levitate, Giratina-O has nothing to fear from Spikes and Toxic Spikes, and can easily survive two Paybacks from Forretress even after two rounds of Stealth Rock damage. From there, Giratina-O can wreak havoc upon the opposing team, through the combination of his powerful moves and the entry hazards he has preserved.
Hidden Power Fire will quickly disintegrate Forretress who are bold enough to stay in and attempt to hurt Giratina-O with Payback, it's also quite effective for dealing with Scizor, Lucario, and Metagross to an extent. Be aware that Hidden Power Fire is quite weak, as it will only manage a mere 3HKO against Forretress in the rain, but it is enough to prevent a successful Rapid Spin later in the game. Outrage is an obscenely powerful attack that allows Giratina-O to tear through the likes of bulky Kyogre and Blissey at moderate health, as well as KOing Ho-Oh after Stealth Rock damage. However, if one is turned off by Outrage's locking in effect, Dragon Claw is a viable alternative, but it is quite weak in comparison; it can't 3HKO physically bulky Kyogre and Ho-Oh after Stealth Rock, nor Protect Blissey without a Lonely nature. Although Shadow Sneak may be a weak attack, it is Giratina-O's only priority move, gets boosted by both STAB and Griseous Orb, and is enough to pick off Psychic-types like Latias, Latios, and Mewtwo when their HP drops to about 50%. Draco Meteor is a very powerful attack that gives Giratina-O a reliable way to dent common switch-ins, most notably Dialga. With Draco Meteor and Shadow Sneak in its arsenal, Giratina-O can make a fantastic check to Rock Polish Groudon, as he is immune to Earthquake and can survive a Life Orb Dragon Claw even after Stealth Rock damage, all the while being able to 2HKO Groudon back with Draco Meteor followed by Shadow Sneak.Team Options & Additional Comments >>>
Giratina-O is a fantastic special sweeper and sports some valuable qualities that other special sweepers can only wish for. He has a great Special Attack stat, complemented by Calm Mind and a myriad of special attacks at his disposal. Being part Dragon-type gives Giratina-O an amazing STAB. His Ghost typing grants him immunity to Seismic Toss, shutting down Blissey's main method of damage, while any attempt to hurt Giratina-O with status is rendered useless by Substitute. Giratina-O's bulk is no laughing matter either, especially when they are coupled with Levitate, which makes him immune to Spikes and Toxic Spikes. To top it all off, Giratina-O has the ever elusive immunity to the item-removing effects of Trick and Knock Off.
Dragon Pulse is a good option in general and is only resisted by Steel-types not named Dialga. Giratina-O can use Dragon Pulse to OHKO Rayquaza and Palkia and 2HKO Groudon without even using Calm Mind. Shadow Ball is a powerful STAB move that provides an easy KO on Mewtwo and deals more damage to other Psychic-types than Dragon Pulse, which includes Metagross and Lugia. Thunder inflicts massive damage to Kyogre while possibly causing paralysis, which aids Giratina-O in his sweep. After one use of Calm Mind, Giratina-O has an excellent chance of OHKOing 4 HP / 0 SpD Kyogre with Thunder after Stealth Rock damage. Substitute is a great defense against status, shutting down standard Blissey in the Ubers metagame while simultaneously aiding prediction. Be careful though, as Giratina-O has no recovery, so his ability to throw out Substitutes is very limited, so make each Substitute count. Aura Sphere allows Giratina-O to severely damage Dialga, Blissey, and most importantly, always 2HKO Tyranitar. If one does not care about Blissey, Calm Mind and 3 attacks can be used for maximum coverage. Finally, there's the option to drop Dragon Pulse in favor of the unresisted combination of Aura Sphere and Shadow Ball; while Giratina-O loses super effective coverage against Dragon-types and some power against Kyogre and Latias, he is compensated by super effective coverage on Psychic-types as well as Tyranitar and Dialga.Team Options & Additional Comments >>>
This set combines the stat-boosting threat of the Substitute + Calm Mind set with a form of recovery to take advantage of Giratina-O's bulk. At the expense of Substitute and an extra attacking move, Giratina-O gains virtual immunity to status and more freedom to switch into attacks. At first glance, it would seem that Giratina is better suited to this set due to its better bulk and access to Leftovers. However, Giratina-O does possess a fair number of advantages over Giratina. While Giratina-O may not find as much room to set up as Giratina, his higher Special Attack stat and the boost from Griseous Orb more than makes up for it. For example, Giratina needs 3 Calm Minds to match the power of a Giratina-O that has used Calm Mind once.
Unlike Giratina, as well as many other sleep absorbers in the game, Giratina-O packs a unique immunity to Trick. In the later stages of the game, this immunity helps prevent Trick users from shutting down Giratina-O's setup process. Finally, Giratina-O has the useful ability Levitate, allowing him to avoid the Spikes and Toxic Spikes that trouble Giratina. Although Giratina can Rest off the damage or status caused by these entry hazards, doing so takes up valuable turns, which can be better spent setting up Calm Minds. Having an immunity to Earthquake never hurts either.Team Options & Additional Comments >>>
While the special sweeper set may be very appealing, one cannot forget that Giratina-O's Attack stat is equivalent to his Special Attack. He is a force to be reckoned with, hitting most Pokemon in Ubers in their softer physical defenses. With access to a STAB 120 Base Power Outrage, which is boosted further by Griseous Orb, he is not to be taken lightly. However, being locked into Outrage can be displeasing, as Giratina-O has mediocre Speed and is weak to Dragon-type attacks, making him very susceptible to the rampant Draco Meteors of Ubers. This can often be remedied by setting up Substitute before attacking to minimize punishment during the turns in which Giratina-O is locked into Outrage. Substitute also protects Giratina-O in case your opponent switches to a counter during Shadow Force's charge turn. Earthquake pairs up with Outrage pretty well as it takes care of Steel-types. The choice between Shadow Force and Shadow Claw is very much up to the user. They both serve as Giratina-O's secondary STAB and are helpful in the disposing of Psychic-types. Shadow Claw is the choice for reliability, while Shadow Force is the choice for sheer power. Shadow Claw can still KO some key targets though, despite its lower Base Power. For example, Mewtwo without physical defense investment and Latias will always be OHKOed by Shadow Claw after Stealth Rock damage.Team Options & Additional Comments >>>
Giratina-O can run a physical RestTalk set fairly effectively too, eliminating any worries about status and residual damage. The combination of Rest and Sleep Talk means that Lugia would be unable to do anything to him apart from setting up Reflect or Whirlwinding him away. Outrage is Giratina-O's weapon of choice, because it is very devastating to most Ubers, as previously mentioned in the physical attacker set. When picked by Sleep Talk, Outrage loses its locking side-effect, and essentially becomes a 120 Base Power STAB move with no drawbacks. This is extremely helpful for Giratina-O, because most of the other sets are easily revenge killed when he's locked into Outrage. Shadow Force is the preferred option out of the three moves listed on the second attack slot, as it cannot be picked with Sleep Talk, giving Giratina-O a higher chance of firing off a very deadly Outrage. This is a win-win situation, as when Giratina-O is awake, he has two powerful offensive moves to choose from, and when he is asleep, he has a high chance of picking consequence-free Outrage with Sleep Talk. If one were to find Shadow Force distasteful, you can choose either Shadow Claw or Earthquake as a replacement. While both of these moves interfere with Sleep Talk's chances of picking Outrage, they are more reliable than Shadow Force when Giratina-O is awake. Earthquake gives coverage against Steel-types, while Shadow Claw decimates Psychic-types.Team Options & Additional Comments >>>
Thunder Wave can be a good option on some Giratina-O sets, as it can ruin many common Giratina-O switch-ins, such as Kyogre, Latias, and the many Pokemon who might come in expecting Giratina-O to set up (such as Rayquaza and Darkrai). Giratina-O also enjoys paralysis support as it is rather slow. Will-O-Wisp can be used to weaken physical attackers, such as Groudon and Metagross, allowing Giratina-O to set up on them, but it will cost him the moveslot for a secondary attack. Energy Ball is Giratina-O's most reliable move against Groudon, but it does not have much use otherwise. Icy Wind is an interesting option to slow down Giratina-O's switch-ins. There's also the option of running 4 HP / 252 SpA / 252 Spe Timid with an all-out Calm Mind + 3 attacks set.
Checks and Counters
Giratina-O is tough to counter directly, considering his huge offensive movepool. The mixed attacker will generally have trouble hurting Heatran and Lugia, while specially defensive Scizor in the rain can take Hidden Power Fire reasonably well and slowly chip down Giratina-O's health with Bullet Punch; he can also Roost off any damage taken.
Latias can stop the special attacker set only if Stealth Rock is not up. While rare, Calm Mind or Psych Up Blissey can stop Giratina-O by breaking its Substitutes with Ice Beam, eventually defeating him outright. If Giratina-O lacks Aura Sphere, Tyranitar can easily take on Dragon Pulse and quickly destroy him with Crunch, Payback, or Pursuit Giratina-O if he tries to flee. Without Thunder, Kyogre can Calm Mind alongside Giratina-O or Roar it away. Choice Specs Dialga with investment in bulk can take a one Calm Mind-boosted Aura Sphere and OHKO back with Draco Meteor. If Dragon Pulse is absent, Rayquaza and Palkia can survive Shadow Ball and proceed to KO Giratina-O with their STAB Dragon-type moves.
The physical sets are countered by Skarmory, Scizor, and Forretress. Skarmory and Scizor can both Roost off any damage done to them, while Forretress can set up entry hazards and use Payback to hurt Giratina-O. Lugia can also switch in on any attack apart from Shadow Force's execution turn and set up Reflect; he can then Roost off any damage and Whirlwind Giratina-O away or hit him with a Toxic or Thunder Wave, cutting short his sweep.
A good rule of thumb is to take advantage of Giratina-O's low Speed and lack of recovery. Even relatively weak attacks like Forretress's Payback can place Giratina-O into KO range of stronger moves like Palkia's Spacial Rend.