Hoppy the Marvel Bunny is a superhero who appeared in Fawcett Comics and was an ally of Captain Marvel. In Hoppy's first appearance in DC Comics (in DC Comics Presents #34), Hoppy and Millie find themselves magically transported to Earth-S, the home of the Marvel Family in the Pre-Crisis DC Universe. He aids the Marvel Family and Superman against Mr. Mind, Mr. Mxyzptlk, and King Kull. In this story, both Hoppy and Millie were depicted as white bunnies, instead of their usual pink. Following DC's 2011 New 52 reboot, Hoppy was reimagined as the pet of Mary Bromfield in the rebooted Shazam! franchise. In Shazam! #1 (February 2019), Hoppy is accidentally struck by magic lightning when Mary and her foster sister Darla Dudley say "Shazam!" and assume their superhero forms. As a result, Hoppy acquires superpowers (flight and lightning-emitting eyes, among others) and his fur pattern reflects the lightning-bolt emblem of the Shazam Family.

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