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