Invincible #37 was published by Image Comics on December 1, 2006, as part of a series that began in 2003. Robert Kirkman writes, and art comes from Bill Crabtree, Mark Englert and Ryan Ottley. This 36-page issue features Invincible, Robot, Cecil Stedman, Monster Girl and William Clockwell, among 10 characters cataloged on VerseDB.