Alternate Jamie is the leader of the resistance force of an alternate version of Earth in another dimension.
This version of Jamie is the hero of his Earth who fights against the evil forces of Evil Coop and his army of robots. He apparently had a romantic relationship with his Kiva until she left with Coop and became evil.
This version of Jamie is practically the polar opposite of his prime universe counterpart, being a very brave and fit leader. He modified the Glorft's mechs into a form his resistance fighters can control.
Alternate Jamie is a love scorn, battle-hardened man with a knee brace and a scar across his left cheek.
Steven Jay Blum, Jamie's voice actor, uses for his alternate counterpart the same signature deep voice heard in such memorable characters as FFVII's Vincent Valentine, Cowboy Bebop's Spike Spiegel, and TOM from Toonami, the programming block that aired Megas XLR for its full original run on Cartoon Network.