Near the end of the war, the Ultra-Humanite had his brain transferred from Dolores Winters' body into that of the American "mystery man" Tex Thompson, known as the Americommando. Paul Kirk (Manhunter), who went covertly behind enemy lines with Thompson to take down the Nazi super-agents, discovered this secret and almost killed himself trying to escape, surviving the incident with only amnesia and terrible nightmares.
In the form of Tex Thompson, the Ultra-Humanite arrived in America at the end of World War II, greeted and crowned as a hero for taking down Adolf Hitler. Shortly thereafter, he began his campaign as a politician, hoping to become President of the United States. To that end, he took under his wing Daniel Dunbar, the former "mystery man" known as Dyna-Mite, and through a nuclear test transformed him into the superhero for the new age called Dynaman. Secretly, though, the Ultra-Humanite had Daniel's brain removed and replaced with that of Adolf Hitler prior to the nuclear test, with the intent that together they would rule the world.
As Tex, the Ultra-Humanite had Joan Dale, the former "mystery woman" called Miss America, become his personal aide and his lover. However, Joan began to suspect that the man she loved wasn't really Tex, and eventually secreted his diary to Lance Gallant (Captain Triumph) and Paula Brooks (Tigress) to unlock its secrets, discovering from it that Tex was really the Ultra-Humanite. Meanwhile, Carter Hall (Hawkman) used hypnosis to unlock the truth behind Paul Kirk's nightmares, where he discovered that he had witnessed the Ultra-Humanite transferring his brain into the body of Tex Thompson.
At a rally in Washington, D.C. in 1950 where all costumed superheroes were to appear by Presidential decree to show their loyalty, Joan Dale publicly exposed Tex Thompson as being the Ultra-Humanite and attempted to also expose Dynaman as being Adolf Hitler in Daniel Dunbar's body when the Ultra-Humanite had Robert Crane (Robotman) silence her by murdering her in public. Rex Tyler (Hourman) took over for Joan Dale in the exposure of both Thompson and Dunbar, causing Dynaman to show his true colors and to attack the various superheroes present. Ultra-Humanite attempted to make a run for it to cover his tracks, but Paul Kirk as Manhunter stopped him and ultimately killed him, forever ending his threat.
- Medicine Brilliant scientist who was able to transfer brains from one body into another.
- This version of the character is native to the JSA: The Golden Age series of stories.
- 2 Appearances of Ultra-Humanite (JSA: The Golden Age)
- 1 Images featuring Ultra-Humanite (JSA: The Golden Age)
- Quotations by or about Ultra-Humanite (JSA: The Golden Age)
- Character Gallery: Ultra-Humanite (JSA: The Golden Age)