| Release: | Jul 27, 1989 |
| Cover: | Sep 1989 |
The Mud Pack, The Coming of Clayface / the Tragic Though Amusing History of Clayface II / His Name Is Clayface III
| Release: | Jul 27, 1989 |
| Cover: | Sep 1989 |
| Writer | Dan Raspler, Mike W. Barr, Len Wein |
| Cover Artist | Kevin Nowlan |
| Penciller | Keith Giffen, Tom Grummett, Bernie E. Mireault |
| Inker | Denis Rodier, Gary Martin, Al Gordon |
| Colorist | Helen Vesik |
| Letterer | Janice Chiang, Augustin Mas, Albert DeGuzman |
| Editor | Mark Waid, Terri Cunningham, Dick Giordano, Pat Bastienne |
| Batman | Bruce Wayne |
| Superman | Kal-El / Clark Kent |
| Joker | |
| Robin | Dick Grayson |
| Two-Face | Harvey Dent |
| Clayface | Basil Karlo |
| Looker | Emily 'Lia' Briggs |
| Clayface | Matt Hagen |
| Julie Madison | |
| Clayface | Preston Payne |
| Kobra | Jeffrey Burr |
| Lady Clayface | Sondra Fuller |
| Bug-Eyed Bandit | Bertram Larvan |
| Mad Hatter II |
| Age | Modern Age |
|---|---|
| Format | Comic |
| Series Group | Secret Origins |
| Genre | Action | Adventure | Historic | Super-Heroes |
| No. of Pages | 48 |
| Country | USA |
| Language | English |