A key issue noted for First appearance of Mathemanic and First appearance of Coronary. The New Warriors #4 was published by Marvel Comics on October 1, 1990, as part of a series that began in 1990. Fabian Nicieza writes, and art comes from Andy Yanchus, Larry Mahlstedt and Mark Bagley. This 36-page issue features Mr. Fantastic, Nova, Firestar, Speedball and Justice, among 18 characters cataloged on VerseDB.