original timeline
Early Lifell
Bruce became interested in science at a very young age and his uncle would nurture his curiosity whenever the two were together. 21
One of his happiest memories was the summer he spent with him and his cousin Jenny in their place in Runnemede, New Jersey, as he claimed Jen was too young to realize what an idiot he was. [3]
Banner grew up hating his weak and frail body and wanted to be powerful, strong, and big like Captain America, a sentiment he shared with his mentor Dr. Leonard Williams during his time as his student at Cambridge University, and dedicated his life towards genetic enhancement and duplicating the Super Soldier Serum in the hopes of secretly empowering himself.[4l
Ultimate Origins I|
The first super-soldier, Nick Fury, gathered the best genetic engineers in an attempt to recreate the Super-Soldier Serum as a preventive measure for the next generation of warfare, and Bruce Banner was one of the gifted scientists.
Bruce thought he had perfected the serum, but didn't share his findings as he thought he would never receive proper credit. Despite warnings against self-experimentation, Bruce tested the serum upon himself and mutated into the Hulk.
He destroyed the laboratory and heavily wounded Mary and Richard Parker in the process. After realizing what he had done, he reverted back into his human form and was arrested by S.H.I.E.L.D..[5]
Life as the Hulk|l
Years later, he mutated once more, fighting Spider-Man and destroying Chelsea piers. [6]
After this incident, Bruce Banner became something of a pariah.
Banner had to take a long leave after the incident before being reinstated into
S.H.I.E.L.D.. He had to get three blood tests a day and they were unable to find traces of Hulk cells for twelve weeks. Banner frequently took pills to prevent himself from sleeping because he said "being asleep felt too much like the Hulk being awake. "[ZI
He got demoted to second-in-charge after Hank Pym and Janet van Dyne. When the body of Captain America was found in the Arctic Ocean, Banner's job changed from recreating the Super Soldier Serum to extracting the Super Soldier Serum from Captain America.
After seeing that Pym and van Dyne were making more advances than he ever did, he began to look at himself as a failure, because he had failed to complete his task and because of his broken relationship with Betty.
The Ultimate Hulk l
Since the newly formed team of superheroes, the Ultimates, didn't seem to have any action, Bruce decided to make some serum. He carefully devised a plan where the Ultimates would appear to be heroes. He set up an antidote with an adamantium needle. He mixed the Super Soldier Serum with the Hulk serum and injected himself with it. He became a gray-colored Hulk. He climbed a building King Kong style, wanting to kill Freddie Prince Junior out of jealousy.
This Hulk was much stronger than the original.
He took on all the Ultimates and even broke an adamantium needle. This Hulk was more like Banner's inner emotions let out, being overprotective of Betty, and talking about how Betty made him horny. He was finally reverted to Banner by Wasp when she stung a part of his brain, rendering him unconscious.
Ultimates Disassembled |]
Bruce was freed by the mysterious woman called Kang, and convinced him to steal the Infinity Gems with which he battled the Ultimates. After the arrival of escapee Reed Richards, the heroes escaped, but Captain America decided to be left behind in order to stop the villains, although he was defeated. 13l
The Hulk was summoned by the Maker to aid him during the final battle against the Ultimates. During the furious fight, Iron Man managed to get the Infinity Gems. But before any of the Dark Ultimates could retrieve it, an immense flux of energy echoed through time and space. Kang alerted that it was too late to prevent what she came to stop and vanished, stating she had to go back further in time, abandoning the rest of her team, who were imprisoned. 14]
The Final Incursion |]
If he was alive at the time, the Hulk most likely died when the entire universe came to an end as a consequence of a phenomenon known as an incursion. 15l
New timeline[]
—Hulk|src|Scientist Bruce Banner was poised to become a destructive force as the Hulk when he was caught in the explosion of the Gamma Bomb in the Bikini Atoll. Due to the machinations of the Maker, an extra-dimensional invader who secretly rewrote history to his image, the Hulk went on to become the leader of a pacifist cult named the Children of Eternal Light, which controlled from within China one of the seven sovereign bodies whose combined power governed the entire world. In turn, the Hulk was also part of a secret council of world leaders under the leadership of the Maker, the world's imperator. Guided by the belief that genuine long-term peace was unattainable due to human nature, they orchestrated geopolitical conflicts and alliances to rally their citizens together under a common cause. Banner studied the debilitating mutations his bomb caused nearby islanders, considering their home "sacred ground".

