Jimmy Ruiz was surgically implanted with cybernetics to allow him to control a suit of battle armor and dubbed Prototype. Unknown to Ultra-Tech, Jimmy was an Ultra who possessed his own internal energy source allowing him to power the armored suit himself, which allowed them to reduce the size of the armor and replaced Bob Campbell who was their original spokesperson, with Jimmy.
Later in the story , Jimmy with Bob, uncovered Ultra-Tech's corruption and opted to overthrow the company and become independent heroes. Jimmy later joined Ultraforce.
Its unknown what happened with him after the Black September event.
Powers: Jimmy possesses his own internal energy source, which alone does nothing. However, he is able to power the suit of armor himself, allowing him super human strength, flight, and energy blasts.