MEW has the DNA of every pokémon, this means he can transform into any pokémon at will, he can even transform parts if its body. Here are a few examples.
celebi+beautyfly jirachi manaphy latias chimecho Mewtwo lugia deoxys latios rukario suicune raichu wartortle butterfree politoed ho-oh charizard makuhita jigglypuff psyduck skitty weedle caterpie eevee vaporeon jolteon flareon espeon Umbreon sneasel azumarill altaria flygon tyranitar gastly ditto illumise volbeat digglet missingno missingno ghost style Thanx to xanth_man90 cubone Thanx to Invader_Glitch01001 castform Thanx to Castform from Pokébeach forums rayquaza thanx to AreauDactoil7 onix thanx to AreauDactoil7 arbok thanx to AreauDactoil7
