A key issue noted for First appearance of General Kregg. Invincible #29 was published by Image Comics on March 1, 2006, as part of a series that began in 2003. Robert Kirkman writes, and art comes from Bill Crabtree, Chie Kutsuwada and Cliff Rathburn. This 32-page issue features Invincible, Omni-Man, Oliver Grayson, Mauler Twins and General Kregg, among 7 characters cataloged on VerseDB.