a world where many heroes are dead. In 2000, Banner and the three Hulks (Savage, Fixit, and the "Merged Hulk", now considered a separate identity and referred to as the Professor) become able to mentally interact with one another, each identity taking over the shared body as Banner began to weaken due to his suffering from Lou Gehrig's disease. During this, the four identities (including Banner) confronted yet another submerged identity, a sadistic "Devil" intent on attacking the world and attempting to break out of Banner's fracturing psyche, but the Devil was eventually locked away again when the Leader was able to devise a cure for the disease using genes taken from the corpse of Brian Banner. In 2005, it is revealed that the Nightmare has manipulated the Hulk for years, and it is implied that some or all of the Hulk's adventures written by Bruce Jones may have been just an illusion. In 2006, the Illuminati decide the Hulk is too dangerous to remain on Earth and send him away by rocket ship which crashes on Planet Sakaar ushering in the "Planet Hulk" storyline that saw the Hulk find allies in the Warbound, and marry alien queen Caiera, a relationship that was later revealed to have born him two sons: Skaar and Hiro-Kala. After the Illuminati's ship explodes and kills Caiera, the Hulk returns to Earth with his superhero group Warbound and declares war on the planet in World War Hulk (2007). However, after learning that Miek, one of the Warbound, had actually been responsible for the destruction, the Hulk allows himself to be defeated, with Banner subsequently redeeming himself as a hero as he works with and against the new Red Hulk to defeat the new supervillain team the Intelligencia. In the 2010s, Hiro-Kala traveled to Earth to destroy the OldStrong Power wielded by Skaar, forcing Skaar and the Hulk to defeat and imprison him within his home planet. During the 2011 Fear Itself storyline, the Hulk finds one of the Serpent's magical hammers associated with the Worthy and becomes Nul: Breaker of Worlds. As he starts to transform, the Hulk tells the Red She-Hulk to run far away from him. Rampaging through South and Central America, Nul was eventually transported to New York City where he began battling Thor, with aid of the Thing, who was transformed into Angrir: Breaker of Souls. After defeating the Thing, Thor