A key issue noted for First appearance of Frog-Man. Marvel Team-Up #121 was published by Marvel Comics on September 1, 1982, as part of a series that began in 1972. Bob Layton and Jim Shooter write, and art comes from Al Milgrom, Bob Sharen and Ed Hannigan. This 36-page issue features Spider-Man, Human Torch, Daredevil, Speed Demon and Frog-Man, among 6 characters cataloged on VerseDB.