[who knows what evil?]

My favorite—the best serial of them all—Dr. Satans Robots! (with The Cobra).

Are you referring to the 'Mysterious Dr. Satan', featuring 'Copperhead' as the hero of the piece? 'Copperhead' was a last-minute insert, as the opponent of Satan's robot was originally intended to be 'Superman', but plans fell through.

[Forward the Light Brigade]

Thanks for refreshing my memory—It was the Coppperhead! I know the female lead—was name Lois. I liked the mad doctor—he chewed the cartpet—He was conflicted—He didn’t want to murder folks—forced too—you know. The Robots were filled with dinamite and would explode and take out a city block if captured! If you get a chance see the feature.