Doc is one of the villains from Battle Circuit. He is a member of the Delete Gang, being in charge of their prison camp along with his big baboon pal Jennifer. Zipang, who had captured Dr. Saturn and the five bounty hunters, leave them all with Doc so he can dispose of them, while Zipang went to take the Shiva System disk to Pluto. Doc traps the bounty hunters in a room with a large spiked roller, but they wake up and escape before being crushed. As they make their way out of the camp, they are stopped by Doc's underling Dave, but they defeat him. As Doc sees them, he tries to flee but ends cornered, being forced to fight them. As he is defeated, a portal appears, so the bounty hunters step on it to chase after Zipang.