Doctor Spectro also wanted to use his colored light technology for the medical benefits of mankind. However, once he was attacked by a gang of opportunistic hoods and his beam was reflected back on himself, Spectro turned evil and gained vast powers which he used against Captain Atom on more than one occasion... including when a miniature malicious mob of his clones attached the Atomic Avenger intent on reassembling Spectro into one man once more. Yet a good persona existed in the group of Docs, who attempted to exert control over the reconstituted Spectro later.
An analog for Sivana over at MLJ/Mighty Comics would probably be the Fly's arch-foe the Spider, another deformed bald midget of malice with a mind for marvelous machinery.
In 1954, aspiring comic book publisher Charlton purchased the rights to several prominent characters from the expiring Fawcett Comics, such as Ibis, Golden Arrow and Lance O'Casey. In 1980 and 1985, DC Comics purchase Fawcett's Marvel Family then Charlton's Action Heroes, and the two were linked once more, now on parallel Earths, Four and Shazam.Now the MLJ has been added to their stable of characters, we examine the parallels in this series.