Although the dominant team of superheroes during the 1940's... really during any era on Earth-S... were the Marvel Family, they weren't alone In fact, the Marvels themselves mixed company with their costumed compatriots from time to time. During a gala in Fawcett City, the Big Red Cheese drew a courageous quartet as featured guests, proving the Captain Marvel wasn't the only game in town From the high seas to the high plains came Lance O'Casey and Golden Arrow. And, drapped over their arrms by their lovely girlfrends Eve Corby and Princess Taia were Spy Smasher and Ibis the Invincble. Alas, there was to be a couple more guests, of the nefarious kind, to spoil this occasion.
The ever scheming Doctor Sivana, wishing to quell his daughter Beautia's heartbroken state from being rejected by his arch-foe Captain Marvel, transformed crackpot scientist Professor Edgewise into a younger version of himself. Unfortunately, an unintended side effect was turning the now chiseled charlatan into a stark raving lunatic. Nevertheless, Sivana used this to his advantage, strapping explosives to Edgewise and sending him into the auditorium where Fawcett's Finest were performing for their patrons. Hoping this would finally remove him of his good-two-shoes enemies, instead he found his potential son-in-law defeated and reverted back to his normal age after confronting this awesome assemblage of awesome avengers. While this would be a footnote on Earths One and Two, where massive amounts of metahumans like the Legion of Super-Heroes and All-Star Squadron met up at the drop of a hat, the Earth-S folks were a bit more modest.