Do you want to compare Colossal Boy with Amanda Sefton? Discover the powers, weakness & weapons of Colossal Boy and Amanda Sefton from Colossal Boy Biography and Amanda Sefton Biography. Find out all about Colossal Boy and Amanda Sefton.# Check out how is Colossal Boy unique and distinct from Amanda Sefton. Discover their love interest, sidekicks, family tree and the movies and games list in which Colossal Boy and Amanda Sefton have appeared. Find out everything about them here!