Missingno. is the most famous glitch Pokemon ever. It will glitch up your game and mess it up like making Pokemon evolve into ones they are not supposed to. Like Squirtle might evolve into Pikachu. The only good thing about Missingno. is that you will get 100 Rare Candies. Missingno. stands for a missing number for something.
Cry:
Coming Soon to PKUVRS
Region: Kanto
Species: Glitch Pokemon
Form(s): Missingno.
Generation: Generation 1
Evolution Line:
Abilities: Aftermath/Sand Veil
Type(s): Ground/Bird in Red/Blue/Green (Bird is not Flying - Bird-type is a glitch)
Type(s): Normal/999 in Yellow
Delta species Type(s): None
Pokedex Color: Purple
Gender: Undiscovered