EVs: 4 HP / 252 Atk / 252 Spe
Nature: Jolly / Adamant
~ Close Combat
~ Stone Edge
~ Toxic / Night Slash / Sleep Talk
item: Choice Scarf
Explanation: Heracross's mediocre Speed is a letdown as a sweeper, especially because so much of the metagame can revenge kill him. With a Choice Scarf, Heracross can switch in with his numerous resistances and immediately threaten the opposing Pokemon. However, Heracross's power is relatively limited without either Swords Dance or Choice Band, so predicting appropriately and switching into Toxic or Will-O-Wisp is advisable. With a Guts boost, Choice Scarf Heracross can rip through much of DPP OU like a chainsaw through a loaf of bread.
Close Combat and Megahorn are the high-power STAB attacks for which Heracross is famous. Stone Edge is essential on Heracross, as Heracross's STAB attacks mainly draw in Flying-types such as Zapdos, Dragonite, and Gyarados, all of whom are weak to Rock. Heracross has a lot of interesting options available to him for his final attack. Because Heracross is not as powerful when holding a Choice Scarf, bulky Pokemon have no trouble switching into him and forcing him out; Toxic is a nasty surprise for these Pokemon, especially on a Choice set. Night Slash is an option because Rotom-A is one of Heracross's most common switch-ins due to its immunity to Close Combat and resistance to Megahorn. Though Sleep Talk may seem unreliable because it only works if your opponent has a sleep-inducing Pokemon, Heracross can be a dangerous threat with his Guts-boosted attacks when asleep. However, like with Toxic, being locked into Sleep Talk opens up opportunities for the opponent to set up, so use it with caution. Note that Sleep Talk only works once per switch-in with a Choice item.
· 7 years ago