Namor, the Sub-Mariner #4 was published by Marvel Comics on July 1, 1990, as part of a series that began in 1990. John Byrne and Roy Thomas write, and art comes from Bob Wiacek and Glynis Oliver. This 36-page issue features Spider-Man, Captain America, Iron Man, Hulk and Human Torch, among 31 characters cataloged on VerseDB.