As one of the top scientists working for Stark Industries, William Ginter Riva was enlisted by Obadiah Stane in the reverse-engineering of the Iron Man Armor MK I with the objective to create the Iron Monger Armor. They stumbled into a dead-end, since they were unable to recreate the suit's power source, a miniaturized version of the Arc Reactor.[1]
Many years later, Riva assisted Quentin Beck in creating the Mysterio persona along with other former Stark employees in order to retrieve E.D.I.T.H. from Peter Parker.[2]
"Ginter" and "Riva" were homages to Iron Man production crew members. "William" was either chosen or approved by Obadiah Stane actor Jeff Bridges who felt that name suited Billinglsey's character.[3]
Billingsley came up with the bald look of his character as a sign of solidarity towards Jeff Bridges who had to shave his head to portray Obadiah Stane.[3]
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