He first appeared as Humus Sapien in Thunderbolts #54 (Sept. 2001), by the writer-artist team of Fabian Nicieza and Patrick Zircher.

[1] Although FOOM founding editor Jim Steranko wrote in the premiere-issue introduction that "(t)he winning entry (to be selected by Ol' Smilin' Stan [Lee] himself) will become a super guest-star featured in one of Marvel's top hero mags!

[2] In 1998, writer Kurt Busiek and editor Tom Brevoort decided to use Barreiro's character in the superhero series, Thunderbolts.

[2] Humus Sapien fought the Redeemers when he emerged from a suspended animation chamber where he had been imprisoned by Ogre and Factor Three.

Humus Sapien's final battle, after which he voluntarily leaves Earth, drains the lives of 2,400 random people across the globe, including the Middle Eastern superhero, the Arabian Knight.