Omega
"What is it with Old Who cosmic villains and goofy masks?"

 

Name: Omega
Origin: Doctor Who
Gender: Male
Classification: Alien Timelord, cosmic being
Age: Billions of years old
Powers and Abilities: Reality warpingimmortality (type 1 and possibly 4), energy manipulation, universe/dimensionmanipulation and creation, telepathy,telekeneis, ability to cross dimensions and universes, antimatter manipulation, non-corporeal, ability to create life, time travel and manipulation, black hole manipulation,teleportation of himself and others (including between universes), conversion of matter into antimatter and vice-versa, cosmic sensesshapeshifting
Weaknesses: Most of his reality warping powers can only be used in the antimatter universe, can lose control of his powers if he is distracted or emotionally perturbed enough
Destructive Capacity: Low multiverse level (his own universe + another)
Range: Multiversal
Speed: Irrelevant within the universe he controls, many of his attacks move at vastly FTL speeds (seeming in fact to be instantaneous)
Durability: Universe level+ (survived the destruction of his own universe), non-corporeality makes him almost impossible to kill
Lifting Strength: Immeasurable
Striking Strength: Immeasurable
Stamina: Insanely high, has maintained an entire universe by sheer force of will for at least millenia
Standard Equipment: His armor and mask (inside they are empty, he exists as a being of pure willpower). Later had a TARDIS and some other equipment.
Intelligence: Superhuman intelligence as a Time Lord, even among Time Lords he is considered one of the most brilliant scientists in history, he was one of the founders of Time Lord society along with Rassilon, he built devices to manipulate and destroy stars in order to harness power for time travel
Notable Attacks/Techniques: 

- Energy Draining Beam: An FTL energy beam fired from his universe into another universe via a black hole, it is capable of draining all of the energy from the target universe, to the point where the fabric of space and time would collapse, causing the universe to be destroyed. Even the Time Lords couldn't stop it, only delay its effects. This beam is also capable of teleporting people and things between his universe and the target universe.

- Dark side of his mind: When the Doctor attempted to engage Omega in mental battle, he let the Doctor face "the dark side of his mind", which manifested as a dark figure that overwhelmed the Doctor in telepathic combat.

- Reality Warping: He can create, alter, and destroy anything he can imagine in his antimatter universe, he can also send his creations to the normal universe by converting them into positive matter. Some of his creations included Gell Guards, which were slow but powerful creatures that were immune to everything up to and including rocket fire and could create explosions at a target area by pointing at it with their claws, and an amorphous blob-like creature that could teleport anything it touched to Omega's universe.

Notable OBD Victories: 

Notable OBD Losses: 

Other: Not to be confused with the character of the same name from DC Comics, the character of the same name from Megaman or any other similarly - named characters