A key issue noted for First appearance of Oliver Grayson. Invincible #26 was published by Image Comics on September 1, 2005, as part of a series that began in 2003. Robert Kirkman writes, and art comes from Bill Crabtree, Chris Giarrusso and Derek Hunter. This 32-page issue features Invincible, Robot, Omni-Man, Cecil Stedman and Deborah Grayson, among 7 characters cataloged on VerseDB.