Doom Beings (Earth-101001)

The Doom Beings are the main villains of the first season. They were created by Naga with the purpose to rule Earth and Vestroia, but once the Perfect Core was created, the positive and negative energies were absorbed and linked into one (this happened in the season finale).

Naga was destroyed by the Fusion Avengers for good and the group broke up.

Leader
Naga (Deceased)

Main Members

 * Hal-G (Deceased)
 * Kurata Akihiro (Arrested)
 * Thanos (Sent to the Doom Dimension, later Gear punches him with the strength of Pegasus Seiya. As Thanos stabs himself, Gear advises him that he should try coming to Earth and fight of good.)
 * Bio-Hybrids (Defeated)
 * Masquerade (Defected at the final battle against Osmosis Jones, dormant within Bridget Verdant, current status unknown)
 * Shadow (Defected)
 * Omni (Deceased)
 * Orion (Deceased)
 * The Gammas (Spend ten years in prison)
 * Broodwing (Former member, later deceased)
 * Boris Ravencroft (dragged to the Doom Dimension)
 * Maleficent (Deceased, later resurrected)
 * Jafar (Deceased)
 * Hades (Sent back to the Underworld)
 * Captain Hook (Gets chased away by the crocodile)
 * Oogie Boogie (Deceased)
 * Ursula (Deceased)
 * Dr. Drakken (Arrested)
 * Optimatus (Deceased)
 * Massive (Arrested)
 * Weather Vane (Arrested)
 * Mastermind (Arrested)
 * Sypher (Arrested)
 * Garland (Defected to S.H.I.E.L.D.)
 * Ming-Ming (Defected to S.H.I.E.L.D.)
 * Mystel (Defected to S.H.I.E.L.D.)
 * Crusher (Defected to S.H.I.E.L.D.)

Naga's Gatekeepers

 * Centorrior (Deceased)
 * Druman (Deceased)
 * Tayghen (Deceased)
 * Hairadee (Deceased)
 * Rabeeder (Defected)
 * Tricloid (Defected)