Other than Devil Hulk, Purple Hulk is one of the Hulk's scariest incarnations. Appearing in Peter David and Dale Keown's Incredible Hulk #371, the Purple Hulk is the result of Hulk's possession at the hangs of Shanzar, Sorcerer Supreme of the Dark Dimension.
Introduced in 2012's Avengers #24, the Purple Hulk is Norman Osborn, aka Spider-Man villain the Green Goblin. After the Skrull attack known as the Secret Invasion destroyed trust in existing institutions, Norman Osborn managed to replace Nick Fury's S.H.I.E.L.D. organisation with his own fascistic H.A.M.M.E.R.
The interesting thing about the Hulk's purple pants is that when he debuted, he didn't wear purple! However, at the same time, he also wasn't green yet! In Incredible Hulk #1 (by Jack Kirby, Stan Lee and Paul Reinman), the Hulk is decked out in some orange-ish garb...
The Hulk has been 4 colors throughout his publication. We all know the Green Hulk, he's the most common. Then of course, there's the Grey Hulk. The color Hulk was supposed to be.
When Lee went to print the first issue, however, the printer had trouble keeping the gray of the Hulk's skin consistent on every page. This prompted the comic mogul to change the color of his skin to the classic green color we've known for nearly 60 years. “It turned out to be a great choice,” Lee later said.
Leonard Williams became the first Hulk and lives as "Tyrone Cash." Unlike the Bruce Banner's Hulk, Tyrone Cash still retains his intellect and self-control and takes a pill containing the modified Hulk Serum as one of its ingredients.
Thanos is an Eternal from the planet Titan who was born with a Deviant syndrome, meaning there are traces of Deviant genes within his body which gives him his hulking, purple appearance.
In the debut, Lee chose grey for the Hulk because he wanted a color that did not suggest any particular ethnic group. Colorist Stan Goldberg, however, had problems with the grey coloring, resulting in different shades of grey, and even green, in the issue.
The Orange Hulk was part of the Black Legion who served Weapon Omega. He was presumably constructed by McCoy or the Sugar Man in their genetic recombinant vats. He defended the Apocalypse ship in Manhattan and attacked the last human settlement where the X-Men fell.
Remember that Gray Hulk might be the weakest version of the Hulk of all-time but there was one other time that Hulk went gray after that original appearance. This was when he turned into Mr. Fixit.
His rare appearances are also explained by saying that the Grey Hulk persona and the Green Hulk persona are battling in Bruce Banner's sub-conscious. Due to his superior strength, Green Hulk/Savage Hulk, won most of the time thus showing the Savage Hulk persona more often.
Just like The Savage Hulk, The Grey Hulk has increased strength, speed, and durability. His strength also increases with his rage, but to a significantly lesser degree. He is weaker than the Savage Hulk, but largely more intelligent.
Amplified by the symbiote's own enhanced abilities, a Venom-Hulk is an incredibly powerful force. On Earth-616, the Venom symbiote has encountered and briefly bonded with two versions of Hulk: during his tenure with the symbiote, Flash Thompson ended up lending the symbiote to Thunderbolt Ross.
In the Marvel Cinematic Universe, the Hulk has only ever had one villain to himself. Called the Abomination (Tim Roth), the evil Hulk from 2008's The Incredible Hulk eventually made his way into MCU continuity via Shang-Chi and the Legend of the Ten Rings.
Devil Hulk was made by Bruce to be a Protector Alter and an imaginary friend/father figure to watch over and love him. As such, devil Hulk cares greatly about Bruce and his well being while being extremely vengeful and violent towards anyone that hurts Bruce or tries to hurt him.
Due to the gamma radiation that birthed him, his skin is nearly indestructible and takes massive force to break. Throughout Hulk's many on-screen fights, he has only bled twice, and both circumstances prove it takes a unique set of variables to accomplish that.
Skaar is a fictional character, a comic book superhero appearing in American comic books published by Marvel Comics, usually as a supporting character in stories featuring his father, the Hulk, who conceived Skaar with the extraterrestrial Caiera during the 2006–2007 "Planet Hulk" storyline.
The Hulks are iconic green monsters. Their skin is green. They bleed green. Even their feces are green.
Zebediah Killgrave aka the Purple Man was a Croatian Spy turned supervillain. He was exposed to various unnamed chemicals changing his skin to a purple hue. He was altered by an accident and ended up giving him the new ability to control people's minds at his will using pheromones.
Biography. The Super Villain Zebediah Killgrave is a unique evil. Able to manipulate, brainwash, and control his targets from afar, the villain weaponizes his victims against themselves. Also known as the Purple Man, Killgrave harnesses trauma, doubt, and fear among his foes as a means to his malicious ends.
Zebediah Killgrave, also known as the Purple Man, was once a Croatian spy sent on a secret mission to steal a special experimental nerve agent. But as he got caught, one of the guards tried to shoot him but missed, hitting the tank and dowsing him with the gas. The nerve agent turned his skin and eyes purple.
Skaar is the son of the Hulk and Caiera the Oldstrong. After Caiera's death, a cocoon containing Skaar fell into the lake of fire.
Titan has the power to absorb energy, including gamma, which makes him able to kill other Hulks, negating their prodigious regenerative capacity. This is how Titan is able to decimate the planet full of Hulks where Bruce landed, and it also appears that he grows bigger and stronger the more energy he absorbs.
HE CAN CREATE MORE HULKS
As it turns out, the Hulk has another power that even he wasn't aware of, and it's that a blood transfusion given by Bruce Banner has the ability to turn others that match his DNA into the Hulk.