Young All-Stars #21 was published by DC Comics on January 1, 1989, as part of a series that began in 1987. Dann Thomas and Jenette Kahn write, and art comes from Bob Downs, Gene D'Angelo and Michael Bair. This 36-page issue features Albert Einstein, Dyna-Mite, Tigress, Iron Munro and Fury (Kosmatos), among 12 characters cataloged on VerseDB.