Matt Hagen - Plundering the depths, Hagen happened upon a pool of mutagenic liquid that allowed him to alter his shape to commit crime and combat the Batman.
| Issue | Comment | Reprinted in |
| Detective #298 | 1st Appearance, vs. Batman and Robin | |
| Detective #304 | vs. Batman and Robin | |
| Detective #312 | vs. Batman and Robin | |
| Batman #159 | w/ the Joker, vs. Batman | |
| World's Finest #140 | vs. Batman and Superman | |
| World's Finest #144 | with Brainiac, vs. Batman and Superman | |
| Action #443 | As a member of the Queen Bee's team of villains, vs. the Justice League | |
| Amazing World of DC Comics #11 | Alternative version of SSOSV #1, joins the Secret Society of Super-Villains (never happened) | |
| Detective #479 | in flashback, donates blood to Preston Payne (Clayface III) | |
| Detective #526 | with an army of villains, vs. Batman | |
| World's Finest #264 | vs. Superman and Batman | |
| Crisis on Infinite Earths #12 | dies in this story | |
| Secret Origins #44 | origin and career recounted |