Warning: SPOILERS for Shang-Chi and the Legend of the Ten Rings.
Both Bruce Banner (Mark Ruffalo) and the Abomination (Tim Roth) appear in She-Hulk.
In The Incredible Hulk, Emil Blonsky was already infused with the Super Soldier Serum before he forced Samuel Sterns (Tim Blake Nelson) to inject him with Bruce Banner's gamma-irradiated blood. The combination mutated Blonsky into the Abomination, a gamma-powered monster with the strength to take on the Hulk, it also warped Emil's unstable personality. After the Hulk defeated Abomination in Harlem, Blonsky was incarcerated in the Vault. Abomination wasn't seen again until Shang-Chi, although Blonsky was initially pegged by the World Security Council to be part of the Avengers Initiative. In Shang-Chi, which is set in 2024, about 15 years after The Incredible Hulk's events, Abomination became a popular cage fighter in the Golden Daggers Club in Macau. Abomination lost to Wong (Benedict Wong), one of the Masters of the Mystic Arts, who previously befriended him.
Abomination appears different in Shang-Chi as Blonsky's physical form has further mutated, growing fins and scales to more closely resemble how the creature appears in Marvel Comics. But it's how Bruce Banner appears in Shang-Chi that positively hints at Abomination's possible future. Banner pops up in Shang-Chi's end-credits scene alongside Carol Danvers (Brie Larson), as Wong invites their expertise in analyzing the Ten Rings Shang-Chi (Simu Liu) took from his father Xu Wenwu (Tony Leung). Crucially, Banner is now in his human form, albeit with his right arm in a sling due to the aftereffect of Avengers: Endgame, yet he was able to turn back into his normal self.
Blonsky has seemingly been trapped in the massive form of the Abomination since his initial transformation in The Incredible Hulk, but if Smart Hulk can revert back to Banner, then it's possible Emil Blonsky could also once again take on his human form. The profound difference is that Banner is a scientist who understands gamma radiation and he was able to master his mean, green alter ego and combine both sides of himself. By contrast, before he was Abomination, Blonsky was a soldier who turned himself into a warped science experiment, but with Banner's help, Abomination could possibly regain his humanity.
The fact that Wong and Abomination became friends - the sorcerer even kindly refers to the gamma monster by his real name, Emil - is a positive sign that Blonsky may have reformed. After all, the Abomination has had no known attempts at destruction since The Incredible Hulk and he may have been pacified (except for his brawls in the fight club). Wong has apparently even taken it upon himself to help rehabilitate Blonsky. The missing piece of the puzzle of Abomination's salvation is for Emil to regain his lost humanity, and Bruce Banner, who has already achieved it, is the man who could make that happen.
The next time Banner/Hulk and Abomination are expected to appear in MCU Phase 4 is in the She-Hulk Disney+ series, starring Tatiana Maslany as Bruce's cousin, Jennifer Walters. While Abomination could be a villain on the show who possibly faces She-Hulk and the Hulk, the Disney+ show could be the stage where Abomination becomes Emil Blonsky again with Banner's help. Blonsky is long overdue for his hell trapped as the Abomination to mercifully end and She-Hulk may be where that change takes place. But just as important as his physical change, She-Hulk may also show that the man Wong befriended is within the Abomination and that Emil Blonsky may also be a changed man after his experiences in The Incredible Hulk and Shang-Chi.
