Tiny Terror

Golden Age Origin
When the Black Terror returned to the present after his battle with Kroll Mull, he took a little souvenir from the future--a tiny robotic Black Terror doll. He left it with the Fibbers Club for twenty-four hours to prove the truth of his exploit. The doll appeared to be sentient and promised to answer any questions that didn't "violate professional ethics."

Golden Age Appearances
Black Terror #22