Chad Grothkopf was an American comics artist and animator. His work appeared in a variety of comics books from the 1930s and 1940s, such as Adventure Comics and More Fun Comics. He re-designed the 'Sandman' costume into that of a standard superhero, and he was the creator of DC's 'Johnny Quick'. Other DC credits include 'Three Aces', 'Radio Squad' and 'Detective Chimp'.
Grohtkopf was also the creator of 'Hoppy the Marvel Bunny', a character that first appeared in Fawcett's Funny Animals #1 in 1942. The character had its own comic book until 1953. In the 1950s Grothkopf illustrated juvenile books starring 'Mighty Mouse'.
Sous Deux Drapeaux (Quebec version of Famous Fiction)
He also did newspaper features called 'Famous Fiction' (Bell Syndicate, 1942-46) and 'Howdy Doody' (United Feature Syndicate, 1950-53).