Suggestions by @ninja_guy222

Takayuki Tsubaki

as Daisuke in Mouthwashing

Score: +2

Eric Cartman

as Gian in The WORST Doraemon Movie

Score: +2

Uwe Boll

as Director in The WORST Doraemon Movie

Score: +2

Garfield

as Doraemon in The WORST Doraemon Movie

Score: -4

Crazy Bus Music System

as Composer in The WORST Doraemon Movie

Score: +2

Shoko Asahara

as Producer in The WORST Doraemon Movie

Score: +2

Masashi Tashiro

as Nobita in The WORST Doraemon Movie

Score: +2

Penguins

as The Penguin in The WORST Batman Movie

Score: +1

Wakita Yasuhito

as Kung Pow in ClayFighter: The movie

Score: +1

Arnold Schwarzenegger

as Hoppy in ClayFighter: The movie

Score: +1