Poochyena's lone ability in the Generation III games is Intimidate. This ability reduces the attack of the opposing Pokémon by one stage when it is entered into battle. This effects both Pokémon in a Double Battle, but is negated by abilities such as Hyper Cutter and Clear Body. Generation IV added a second ability to Mightyena, called Quick Feet. With the acception of Paralysis, when afflicted by a status condition its Speed Stat increases by 50%.
Generation V continues the tradition of adding a new ability to Mightyena, this one available to Dream World Mightyena: Moxie. This ability increases its Attack Stat by one stage each time it defeats an opposing Pokémon.
Poochyena evolve into Mightyena starting at Level 18.
Mightyena is in the Field Egg Group, and its Egg takes approximately 3,840 Steps to hatch. It takes Mightyena One Million Experience Points to reach Level 100.
Mightyena takes the appearance of a dark hyena.
Mightyena doesn't have any distinguishable characteristics to help differentiate between male and female.
Mightyena can appear at Route 214 or Route 215 when a PokéRadar is used in Diamond. Platinum, Heart Gold and Soul Silver, along with Pokémon White, do not have Mightyena in the wild, but one can be obtained via evolution.
Mightyena can only be obtained by trading for one in Pokémon Black.
Mightyena appears at Secret Storage 12, Endless Level 56, Forever Level 27 and Mr. Who's Den in Pokémon Trozei!.
In the original Mystery Dungeon game, Mightyena can only be obtained by evolving a Poochyena. In Explorers of Time, Explorers of Darkness and Explorers of Sky, Poochyena appears at Concealed Ruins B16-B29 and World Abyss B16-B27.
Mightyena does not appear in Pokémon Ranger or its sequel Pokémon Ranger: Shadows of Almia. Mightyena makes its Ranger debut in Pokémon Ranger: Guardian Signs at the Left Hallway in the Old Mansion in the Present, along with the Fire Temple Mission "Graveler's Terrible Rocks" by capturing it or the Mightyena, obtaining its slate and finishing the level within the time limit.
Mightyena can be found at Seabreeze Trail Meadow 1-2 in Pokémon Rumble Blast after completing the game.
Trading Card Game
Mightyena appears in 12 sets, some multiple times, and the 6th Movie Halfdeck. It is listed as an Uncommon Card in the EX Ruby and Sapphire, EX Team Magma VS Team Aqua (2), Legends Awakened and Platinum sets. It is listed as a Rare Card in the EX Ruby and Sapphire, EX Team Magma and Team Aqua (2), EX Deoxys, EX Delta Species (Delta Species Card), EX Holon Phantoms, and EX Power Keepers sets.
Mightyena's Manga information is unknown as of writing.
Mightyena finds itself in the Never-Utilized Tier of Competitive Battling. While its Statistics are mediocre at best (including frail Defenses), its one highlight is access to its Hidden Ability, Moxie, which increases its Attack by one stage each time it KO's an opponent. The more Attack Increases that it gets from this Ability, the more damage it will do with its Physical attacks.
The only way it can get around its somewhat slow Speed is using Sucker Punch, which gets priority and hits hard.
Omega Ruby/Alpha Sapphire
Via Move Tutor (OR/AS)
Generation III Move Tutor Moves
Generation IV Exclusive Moves
Via Move Tutor
Heart Gold/Soul Silver
Poochyena Exclusive Moves
Via Purification (Pokémon XD: Gale of Darkness)
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