| Underdog: Free Comic Book Day (I) (American Mythology Productions) (1) (2017) | ||||
| Series | No. | Date | Year | Title |
| Underdog: Free Comic Book Day | 1 | May | 2017 | Phony Baloney (Underdog) |
| The World of Commander McBragg | ||||
| Beware the Blowhard (Underdog; Reprint from Underdog (Gold Key) #12) | ||||
| - (Preview of Casper the Friendly Ghost) | ||||
| - (Preview of Rocky and Bullwinkle) | ||||