9 suggestions

Zachary Levi
as Hammond in Mistborn

Kiernan Shipka
as SCP-166 in SCP The Movie

Mckenna Grace
as SCP-239 in SCP The Movie
John Goodman
as Dr Kondraki in SCP The Movie

Marc Evan Jackson
as Dr Cimmerian in SCP The Movie
Eric Kripke
as Writer in SCP The Movie

Matthew Mercer
as SCP-049 in SCP The Movie

Tom Hanks
as SCP-343 in SCP The Movie

Joaquin Phoenix
as Dr Clef in SCP The Movie