Merrill Hagan is a writer who's worked on fifteen episodes for Teen Titans Go!, including writing and producing the "Top of the Titans" specials. He has also authored eight comic book issues for the Teen Titans Go! comic series. He created the tagline "Truth. Justice. Pizza." for the original 2003 Teen Titans. He has also written for Bunnicula, Magic School Bus, Unikitty, Super Dinosaur, Danger Mouse and several other cartoons.