At one point, the Hulk was transported to another plane of existence, where he met the beautiful queen Jarella and fell in love with her. Then, back on Earth, Banner performed a blood transfusion on his wounded cousin Jennifer Walters, which caused her to change into a “She-Hulk,” and later Banner accepted the Hulk as an integral part of himself. When an accident allowed the Hulk to retain his alter-ego’s intelligence, the U.S. president pardoned the creature, until Banner once again lost control of his other self. Wandering once more, and near-mindless, the Hulk found himself at an other-dimensional crossroads, the result of Dr. Strange’s well-meaning spells, and entered into a new series of weird adventures there.
Brought back to Earth accidentally by the Canadian super team Alpha Flight, the Hulk rampaged across the land before being separated into two wholly separate beings, himself and Bruce Banner. Believing a new future lay ahead of him, the scientist proposed again to the now-divorced Betty Ross, but their hopeful new wedded life fell quickly into chaos when the Hulk and Banner were reintegrated. After that, a strange, intelligent, and grey-skinned version of the Hulk—not unlike his first form— emerged to work as an enforcer nicknamed Mr. Fixit in Las Vegas for a time.
The green Hulk eventually returned and due to the work of psychiatrist and fellow gamma-mutate Doc Samson, grew more intelligent. Now known as the Professor, this clever, smart Hulk met and joined the secretive group called the Pantheon, faced his own possible future-self, the Maestro, and reverted back to his more-brutish form when Banner received shrapnel close to his brain after an attack. The scientist also finally made peace with the ghost of his abusive father after the mutant Apocalypse removed a dangerous shard in his head and his beloved Betty seemingly died.
A revived Betty came to Banner in the guise of the mysterious “Mr. Blue” to teach her husband self-hypnosis to help him control the inner Hulk. The Leader framed the green giant for murder, prompting Banner to hit the road and avoid the gamma villain’s bid to insert his own mind into the Hulk’s body. Another gamma bomb explosion temporarily resurrected the grey Hulk, and a collection of the smartest heroes on Earth called the Illuminati shot the Hulk into space for permanent exile, but a space warp transported him to the far-flung planet Sakaar where he became a popular warrior, and eventually the world’s ruler.
Lasting happiness on Sakaar eluded the Hulk when the power cell in his spaceship exploded and decimated a large portion of the planet, along with his queen. Returning to Earth for revenge on the Illuminati, the Hulk went on a rampage until Iron Man devised a way to transform the behemoth back into Bruce Banner and hold him in stasis. During this time, the Hulk was befriended by boy genius Amadeus Cho, and Banner witnessed the advent of both a new Red Hulk (secretly “Thunderbolt” Ross) and Rick Jones’ transformation into the blue beast called A-Bomb. The original Hulk finally returned to put all newcomers in their place, as well as to deal with the arrival of his son Skaar from Sakaar and Betty as a Red She-Hulk.