There was a Saturday Morning Cartoon that I was not allowed to watch as a Child around 1975, too Sadistic. I’m not sure if it was called Dr. Doom or there was simply a character named Dr. Doom. I think it was Black and White, but that seems unlikely given the dates. It may have been part of a collection of weekly shows. I am fairly certain that Dr. Doom was the Protagonist, the bad guy. Any idea what this was? Sorry I don’t remember more (I was 4!)
Marvel comics and Hanna-Barbera animation put out a few superhero cartoons in 1967.
The Fantastic Four (1967)
Dr. Doom was an enemy of the Fantastic Four, Episode 7.
Also featured were Captain America (Red Skull) and Spiderman (The Green Goblin), to my recollection.
I would think you could watch it on YouTube, DVDs are available.
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Maybe Simon Bar Sinister from “Underdog” animated series?
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