Zoey

Marie

Ignacio

Galen

Ollie

Tala

Quinn

Bodie

Teacher

British

Vampire Bodyguard

Francis

Woman

Bodyguard

The Narrator

African lady

Soft Bubbly

Southern

Robot

Hailey

French

Hood

Indian Girl Accent

A French Girl

Male Russian Accent

Irish

Famous of transforming to match on the item they are trying to duplicate, Ditto is stated to have the capability of copying their target's genetic code, allowing it to transform to its target. Dittos are also somehow popular in the breeding community, so far as to successfully breed Pokémon with unknown or no known gender and sex, to baffling results. 

Ditto

Can and will transform into something