Frankenstein is a fictional character appearing in American comic books published by DC Comics. He is based on the Frankenstein's monster character created by Mary Shelley.

Klarion the Witch Boy is a supervillain appearing in American comic books published by DC Comics, having first appeared in The Demon #7 and was created by Jack Kirby. The character is typically portrayed as a powerful but mischievous, immature extradimensional warlock who serves as both the archenemy of Etrigan the Demon and is a reoccurring adversary for various mystic characters and teams in the DC Universe.