Cull Obsidian was physically the most powerful of Thanos' children and was a member of the Black Order. He joined Thanos in his quest to obtain all the Infinity Stones. He fought in the Battle of Wakanda, where he was killed by Bruce Banner in a Hulkbuster suit.
Following The Mad Titan
Cull Obsidian participated in Thanos' assault on the Asgardian ship Statesman in search of the Space Stone. During the boarding action, Thanos was attacked by the Hulk. Cull Obsidian moved to intervene on his father's behalf but was restrained by Ebony Maw who told him to let Thanos "have his fun". With the Space Stone added to the Infinity Gauntlet, Thanos teleported himself and his children away from Statesman as it exploded.
Under orders from Thanos, Cull Obsidian and Ebony Maw then traveled to New York City on Earth in an effort to secure the Time Stone from Doctor Strange. Their ship caused panic and devastation on the streets of New York, and the pair were opposed by Doctor Strange, Wong, Iron Man, and Bruce Banner. Iron Man intended for Banner to Hulk out and take on Cull Obsidian, but Banner was unable to transform, leaving Iron Man and Spider-Man to fight Cull Obsidian. During the battle, Wong used his magic to teleport Cull Obsidian to Antarctica. As Cull Obsidian tried to return through the portal, Wong closed it, cutting off his forearm.
- "See ya!"
- ―Bruce Banner to Cull Obsidian
Cull Obsidian was present at the Battle of Wakanda, leading Thanos' Outriders alongside Proxima Midnight in order to take the Mind Stone from Vision. Cull Obsidian managed to use his hammer to temporarily knock down War Machine before he witnessed the arrival of Thor, Groot and Rocket Raccoon. He then started to kill several Wakandan warriors until he was beaten down by Black Panther's kinetic energy pulse.
Soon after, he joined Corvus Glaive in attacking Vision, but his focus was soon fixed on Bruce Banner in his Hulkbuster armor. During the fight, Obsidian managed to detach the Hulkbuster's left arm. Banner then trapped Obsidian's arm in the gauntlet and activated the inbuilt thruster. Obsidian was sent flying into the sky where he was grinding up against the inside of the force-field protecting Wakanda, causing part of Obsidian to burn away before the gauntlet exploded, killing him.
Cull Obsidian was a savage brute that took great pleasure in fighting his enemies with the Black Order. He was eager to fight the Hulk on behalf of Thanos during the attack on the Statesman before being stopped by Ebony Maw. In contrast with his siblings, he was apparently the least intelligent of the Black Order, as he was only able to communicate in grunts and growls. He recklessly attacked his foes head-on, which would be a trait that would cost him his life as exemplified by how Bruce Banner was able to outsmart him and send him flying to a fiery death.
Powers and Abilities
- Superhuman Strength: As a result of his great size, Cull Obsidian possessed an incredible level of superhuman strength and was seemingly able to match that of the Hulk, as indicated by Cull intending to fight the Hulk for his master Thanos when Hulk attacked the Mad Titan. Cull's strength indeed allowed him to fight on par with, and even overpower, the Hulkbuster, a weapon that was able to defeat the Hulk, though it should be noted that it had already taken damage from several Outriders. In fact, Cull was strong enough to easily rip the Hulkbuster's arm off.
- Superhuman Durability: Cull Obsidian possessed tremendous levels of superhuman durability, taking numerous blows from Iron Man's enhanced nanotech suit, the Hulkbuster armor, and even a full blast of Black Panther's kinetic energy projection, all with absolutely no sign of harm. However, Cull's durability appears to have a maximum limit, since he was destroyed when Bruce Banner's detached Hulkbuster arm lifted and dragged Cull into the intense energy of Wakanda's barrier. Despite the event ending in his death, he lasted a prolonged period of time grinding into the barrier.
- Master Combatant: Despite his ferociousness and recklessness, Cull Obsidian was a highly formidable and accomplished combatant, who used his massive size and strength to great effect. His skill allowed him to overpower Iron Man and fight off both him and Spider-Man, with only Wong's interference of opening a portal to send him to another place preventing him from killing Iron Man. During the Battle of Wakanda, Obsidian easily slew many Wakandan warriors and slowly overpowered Bruce Banner in the Hulkbuster when he severed the suit's left arm. Obsidian was eventually defeated when Banner trapped his arm in the detached gauntlet of the suit and sent him flying to an explosive demise.
- Cull Obsidian's Chain Hammer: Cull Obsidian utilized a massive multi-tool like weapon that had a wide range of abilities. It was primarily used as a hammer and the head of the hammer could be launched attached to a chain to hit targets at a distance. It also possessed a claw like function, being capable of grabbing targets. It could also transform into a shield that was capable of deflecting energy blasts. The upper half of the device can also be launched as a snare while the rest can turn into a long blade. It was also capable of turning into a hooked blade which he used to destroy an arm of the Iron Man Armor: Mark XLIX.
- Cybernetic Arm: Cull Obsidian had his left forearm replaced with a prosthetic, having lost it when it was trapped in a magic portal that was closed by Wong, severing his arm. The prosthetic is capable of turning into a short blade.
- In the comics, Black Dwarf was the strongest and most powerful member of the Black Order. He was expelled from the Order after a failed attempt of conquering Wakanda, and was killed by Ronan the Accuser when he later attempted to retain his rank by destroying the Avengers. He was later resuscitated by the Grandmaster.
- The name "Cull Obsidian" is an alternative alias for the Black Order in the comics.