suit actor; stunt performer in a full-body costume
Refers to a performer who wears a full-body suit or costume, often in tokusatsu shows, theme parks, or promotional events. The term is wasei-eigo and not used in English with this meaning.
wasei-eigo (Japanese-coined English), from suit actor
He works as a suit actor in a tokusatsu hero show.
Suit actors who wear mascot costumes at theme parks need physical stamina.