Mojo the Kid is the old Western counterpart of Mojo. He has a brown cowboy hat, a western outfit, and has a pet donkey named Burrito, who might be the Western counterpart of the Talking Dog. Mojo the Kid is seen in the episode, "West in Pieces", where his attempt to defeat the Steamypuff Girls and take over the Wild West succeeded, but later backfired when the Professor put duct tape on the girls' flying barrels, so they wouldn't fall apart when Mojo tries to shoot the girls with his banana blaster. His defeat came when the Steamypuff Girls defeated him and threw him in the old western jailhouse on top of a cliff, crashing through the roof and landing with a mad and injured face when the door shut, and being rightfully imprisoned for his crimes.
He is voiced by Roger L. Jackson, who also voices his original counterpart.