Among the templates upon which Bill Black rebuilt his Sentinels of Justice, after the departure of their original members from Charlton Comics, was that of Captain Atom. Wait... we considered him previously with Stardust... who emulated the more cosmic aspects that made Nathaniel Adam's alter ego his world's premier protector.
Charlie Starrett was a 19th century ranch hand who assumed the identity of the Latigo Kid. After a conflict on the planet Rur, upon which Stardust resided, Starrett was enlisted in the early 20th century to become their protector named Captain Paragon after consuming a Life Fluid and Stellar Erg Implanter. Although under suspended animation for 30 years after his battle in 1952 with the Black Shroad (shades of Atom's arch-foe the Ghost), Paragon became a founding member of the Sentinels.
As for the seeming duplication of the Cap Atom template, remember that the good Captain became embroiled in conflicts with an alien race of Sunurian warrior women, much like Stardust's own peoples. Perhaps, had the queeen of their race had time to siphon off some of the hero's abilities upon herself, she would've manifested into her world's own variation of sizzling sister. Alas, she was busy squashing the schemes of her planet's monarch, the Ghost, and never had the chance.
As for the seeming duplication of the Cap Atom template, remember that the good Captain became embroiled in conflicts with an alien race of Sunurian warrior women, much like Stardust's own peoples. Perhaps, had the queeen of their race had time to siphon off some of the hero's abilities upon herself, she would've manifested into her world's own variation of sizzling sister. Alas, she was busy squashing the schemes of her planet's monarch, the Ghost, and never had the chance.