Answer: bugeyed

AnswerCrossword Clue
BUGEYEDLike Peter Lorre or Steve Buscemi
BUGEYEDAgog
BUGEYEDShowing surprise
BUGEYEDExpressing shock, perhaps
BUGEYEDAstonished
BUGEYEDLike many sci-fi monsters
BUGEYEDLike monsters in classic sci-fi