In 1894, the scientist Abednego Danner injected his pregnant wife with an experimental serum. Their son Hugo was born on Christmas Day of that year with super-human strength, speed, and nigh-invulnerability. Hugo lived with his parents throughout his teen years and left at age eighteen to attend college and travel the world. In the years that followed, Hugo's special powers led him through a number of adventures, but his unique stature among mortal men forever brought him grief. Eventually, Hugo staged his own death in the Yucatan Peninsula and went into hiding.
Before vanishing, however, Hugo returned home to Colorado once more and enjoyed a one-night affair with his high school sweetheart, Anna Blake, who became pregnant. When Hugo disappeared for good, Blake married a young businessman named John Munro, who never realized the child she bore was not his own. Their son, Arnold, began exhibiting superhuman powers of strength and invulnerability at age ten. Remembering Hugo's troubles, Anna made her son promise to keep his abilities a secret until he turned eighteen.
Years later, when Arn became a member of the All-Star Squadron through its Young All-Stars subgroup, he received a mysterious diary written by Hugo Danner, his father. He learned about his father's troubled life as one of the 20th century's first metahumans. This led the young hero on a quest to learn of his father's fate.
After having read his father’s diary, Arn turned to the government's secret Project M, demanding to know the location of the "Dinosaur Island" mentioned in his father's diary. There he met Georgia Challenger, who led him instead to Maple White Land in South America. Surprisingly they found Arn’s father, Hugo Danner, who had spawned a new band of "offspring," the Sons of Dawn.  Danner used his father's formula to bestow powers on these Sons of Dawn and mentioned that the creators of the villain Übermensch had also stolen that formula.
Arn was forced to oppose his father when Danner ordered the Sons of Dawn to attack a city in Rioguay.  The combined might of the All-Star Squadron defeated the Sons of Dawn and Danner was killed.
Superhuman strength and speed, incredible leaping ability, limited invulnerability.
- Hugo Danner's character and history is based on Philip Wylie's 1930 science-fiction story Gladiator.
- 6 Appearances of Hugo Danner (New Earth)
- 2 Images featuring Hugo Danner (New Earth)
- Quotations by or about Hugo Danner (New Earth)
- Character Gallery: Hugo Danner (New Earth)