Gideon was an excellent combatant and had extensive training in multiple forms of armed and unarmed combat.

Gideon was a member of the first expedition led by Christopher Columbus in 1492, but he succumbed to the rigors of the journey, died, and was buried. However, Gideon recovered, his nature as a mutant External allowing himself to be resurrected. Although his subsequent history remains largely unknown, over the course of the next several hundred years, he became quite wealthy and discovered other Externals like himself.