As a Psychic/Steel type, Mega Chimecho has 3 weaknesses, 9 resistances and 2 immunities, about the same as the average Pokémon's 3.3 weaknesses. 10 other Pokémon share the Psychic/Steel typing.

Levitate (always, already counted above): Ground 2× → 0×

Base stats

HP: 75
Attack: 50
Defense: 110
Sp. Atk: 135
Sp. Def: 120
Speed: 65
Total: 555

Mega Chimecho has a base stat total of 555, higher than 81% of Pokémon. With Sp. Atk (135) well above Attack (50), it works best as a special attacker. Its Speed of 65 is middling (faster than 44% of Pokémon). With 75 HP, 110 Defense and 120 Sp. Def it is bulky.

Mega Chimecho's only ability is Levitate.

How to beat Mega Chimecho

Mega Chimecho takes 2× damage from Ghost, Fire and Dark moves, so lead with those.

Avoid relying on attacks it shrugs off: Poison and Ground moves have no effect on it and Normal, Flying, Rock, Steel, Grass, Psychic, Ice, Dragon and Fairy moves are resisted.

Good counters: Heatran hits for 2× with Fire-type STAB and resists its Psychic and Steel moves. Victini hits for 2× with Fire-type STAB and resists its Psychic and Steel moves. Chi-Yu hits for 2× with Dark-type STAB and is immune to Mega Chimecho's Psychic moves and resists its Steel moves.