Black Doom (ブラックドゥーム, Burakku Dūmu) is the leader of the Black Arms, known as God of Destruction, Dark Master, Chaos Bringer, and Legendary Destroyer, the primary antagonist from the Black Arms Saga, and also is likely meant to serve as Shadow's arch-nemesis, similar to what Dr. Eggman is for Sonic.
Black Doom is a black-brown Black Arm that has a very menacing appearance. Black Doom, unlike the rest of his species, has three glowing red eyes, and twin horns sticking out of either side of his head; he is decorated with a worn robe, chains with spiked ornaments, and jewels around the top of his robe. He has a very deep voice that presents an echoing effect and appears very aged, claiming to be immortal. He stated that he ruled the universe at one point, but this is probably saying that he was the strongest known being in the universe at that point. altough his current status is unknown, it has been said he lived far more than 2000+. His birthplace and foretress is the Black Comet.
Black Doom is presented as a highly ruthless, sadistic, and power hungry tyrant. He regards humans as pathetic creatures that have led to the destruction of their own planet. Black Doom has absolutely no affection or sympathy for anybody or anything, including his own army and his creation Shadow. He gladly took the lives of his own army in order to destroy Central City, the city he choose for the site of the comet when it was teleported down via Chaos Control. Black Doom has a dark lord persona in which he committed horrible atrocities throughout the story, such as attacking six cities and murdering millions, blowing up Central City, and torturing the humans and having his army eat them. He also does not tolerate any kind of mistake or failure, no matter how difficult the task on Shadow's part may be.
Black Doom's plans for the planet Earth extend much further than simply controlling the planet. His main goal is to take control of the planet and then have him and his armies feed off the humans so that his army will be invincible. According to Doom, once the planet is under his control, the humans will never see the sun again and the planet will cease to be blue. It seems Doom wants to conquer the planet as a step closer to conquering the entire universe. He sees the humans as fools who have committed crimes against themselves, and believes that he is actually trying to save them. His interpretation of saving them, however, is using them as a food supply. He believes that is their only purpose now and enabling them to become that is the same as saving them.
While Doom claims that he has Shadow's best interest, he really does not care for him and cares only for his usefulness. He often tried to manipulate Shadow's emotions in order to turn him against humanity, but this caused Shadow to see Black Doom as his ultimate enemy in the end. Doom sees Shadow as his gateway to the emeralds and his unusual skills would make him a great addition to the army. Doom often used Shadow to do tasks that would give him an advantage, such as destroying the data base so information could no longer be transferred among the humans, awaking the temples to be used as weapons, and even attempting to assassinate the president.
Unlike other Sonic villains, Black Doom is completely devoid of any sense of humor. He is quite arrogant, claiming that he not only rules the universe, but that he is the strongest being in the universe as well (to the point of saying he is immortal). Despite all this power he is still defeated by Super Shadow, which ironically was his fault, as he left the Chaos Emeralds with Shadow when he warped away to transform to Devil Doom, believing their power was useless against him. He reconsiders this belief during the final battle, admitting he'd underestimated the Emeralds' powers.
- Shadow the Hedgehog (Biological "son", arch-enemy)
- Dr. Eggman
- Team Rocket
- Sonic the Hedgehog
- Knuckles the Echidna
- Tails the Fox
- Ash Ketchum
- Rouge the Bat
- Amy the Hedgehog
- Cream the Rabbit
- E-123 Omega
- Big the Cat
- All of Humanity