When the Olympus Group sought to replace Earth with a new reality, Cho and Hercules summoned the Avengers to attack. Hercules lost his life in the battle and Amadeus temporarily inherited the mantle of Prince of Power—until Hercules returned to life again. The Olympian goddess of Wisdom, Athena, saw Cho's great promise and decided to make him the permanent Prince of Power. This meant that Hercules—Cho's best friend and the holder of the position—must have been killed to make way for the new Prince. Amadeus did his best to protect his friend, but Hercules perished. Cho eventually ascended to full godhood in order to bring Hercules back from Hades and reinstated him as the Prince of Power. As the Prince of Power, however, he beat Agamemnon to become a god and used his powers to find Hercules, whom he then granted his new power to. Cho also once dated Delphyne Gorgon, queen of the Amazons.
Later, Amadeus was trapped in the middle of the Pacific Ocean with X-23 (Laura Kinney), Spider-Girl, Power Man, and Thunderstrike. While fending off samurai sharks, the others found out that Amadeus had manipulated them into joining him in a new Super Hero group and rejected his ultimate offer.
Cho later took on the powers of Hulk—becoming the Totally Awesome Hulk. When Bruce Banner took in a lethal amount of radiation, Amadeus created nanites that removed the Hulk from Banner's body and placed it in his own. He used his newfound abilities to hunt dangerous monsters, but since he was still a kid and not fully practiced with his new powers, he was labeled irresponsible. Nevertheless, he joined forces with She-Hulk and Miles Morales (AKA Spider-Man) on his monster hunt before being captured by Lady Hellbender, an alien woman with strength comparable to that of the Hulk. He was rescued by She-Hulk and Maddy Cho, his sister, though, just in time to fight a horde of monsters including Fin Fang Foom.
Not long after, Amadeus began to have strange dreams about his dead parents and experienced blackouts where he became the Hulk without having any control over the transformations. Upon hearing this was happening, Maddy feared that Cho's Hulk was becoming like Banner's Hulk—wild, violent, unpredictable, and, most importantly, uncontrollable.
He was later ensnared by Enchantress, who used him (as Hulk, of course) to steal uru metal, so that she and her partner Malekith the Accursed could make weapons for an army that would help the two conquer the Ten Realms. Thor believed Amadeus guilty, but Maddy cooled the god?s anger and convinced Amadeus to fight alongside Thor against Enchantress and Malekith's army, despite Cho's fear that he'd lose control again. Joining forces, Thor and Amadeus defeated the villains, with Hulk using an ax that could destroy uru-made weaponry.
During the second Super Hero Civil War, Amadeus informed Bruce Banner that he was finally free of all-radiation. Without the Hulk's incredible healing powers, an ecstatic Bruce came down with the flu. However, Amadeus became distraught over the death of Banner at the hands of Hawkeye, who was trying to prevent a Hulk massacre predicted by the Inhuman Ulysses Cain. He taunted Captain Marvel (a proponent of acting on Ulysses's visions) in the Appalachian Mountains before heading out to confront Hawkeye. However, the person waiting for him was Black Panther, who fought Hulk in his own interpretation of Tony Stark's Hulkbuster suit.
Amadeus was sidetracked when he was then called to fight a giant insectoid monster in Texas, but found Hawkeye weeks later in a diner in Topeka, Kansas. Cho voiced his wish to kill Barton out of revenge, but instead, his anger cooled and the two cried over the death of their friend, Bruce Banner.