One Panel #804: Bulletdog Gains a Nemesis!

From "The Return of the Crackpot", probably by Jack Binder, Bulletman #12 (February 1943)

Look, it's not complicated. If you hero includes a super-powered dog as part of his ensemble, and your villain uses robots to commit crimes, then you MUST also give said canine a robot dog to fight. They cracked this code in 1943!