Mewtwo has 2 alternate forms, 1 change type and 2 change stats

Mewtwo and its 2 alternate forms, of the 1,025 species this site covers

Alternate forms2

Change type1

Change stats2

Largest total shift+100

Default form

Mewtwo

2 m, 122 kg

Abilities: Pressure, Unnerve (hidden)

Base stat total 680.

Form 2 Mega Battle only

Psychic and Fighting instead of Psychic

2.3 m, 127.0 kg, from X and Y, 115 moves in its learnset

Abilities: Steadfast

Stat	Default	This form	Change
HP	106	106	0
Attack	110	190	+80
Defense	90	100	+10
Sp. Atk	154	154	0
Sp. Def	90	100	+10
Speed	130	130	0
Total	680	780	+100

Form 3 Mega Battle only

100 more base stat points, spread differently

1.5 m, 33.0 kg, from X and Y, 115 moves in its learnset

Abilities: Insomnia

Stat	Default	This form	Change
HP	106	106	0
Attack	110	150	+40
Defense	90	70	-20
Sp. Atk	154	194	+40
Sp. Def	90	120	+30
Speed	130	140	+10
Total	680	780	+100