Origins: Samurai Jack
Alias/Aka: Master of Masters, The Deliverer of Darkness, Shogun of Sorrow, The Shapeshifting Master of Darkness, Ikra, The Hermit
Classification: Demon, a fraction of The Nameless Evil
Threat level: Maoh-
Powers and abilities: Superhuman physical characteristics, Immortality and Regeneration, Shapeshifting, Time Manipulation, Size Manipulation, Necromancy, Fire Manipulation, Explosion Manipulation, Weather Manipulation, Matter Manipulation, Crystal Manipulation, Telekinesis, Teleportation, Reality Warping, Precognition (through his dreams), Clairvoyance, Mind Manipulation, Mind Reading, Empathic Manipulation, Duplication, Life Manipulation, Age Manipulation, Healing
Physical strength: At least country level+ striking (A weak Aku falling into Earth caused the dinosaurs extinction)
Attack potency/Destructive capacity: At least country+ (Casually blocked out the sky after he was first released, stripped the ocean planet Vadaquas of all its water, claimed that he would darken the skies and flood the Imakandi's home world with a rain of priceless jewels if they were to succeed in defeating Samurai Jack)
Durability: At least country+ (Survived the crash which life wiped the dinosaurs. Took hits from the Goddess of Water, a being that created the Neptune Jewel which is capable of controlling all the water on Earth), immortality and regeneration make him extremely difficult to kill although as a being of pure evil, he is weak to holy weapons.
Speed: At least relativistic+ (Can tag Jack in combat), has MFTL+ space travel feats although they are inconsistent.
Intelligence: Very high (Extremely cunning, has manipulated various races into serving him and tricked Jack on multiple occasions such as when he took the form of an attractive woman to prevent Jack from gaining access to a power that may of took him home)
Stamina: At least nigh-limitless.
Range: At least dozens of kilometers.
Weaknesses: As a pure evil being he is weak to holy weapons. Aku's own reflection will reveal his true form no matter what he has shifted to look like.
Standard equipment: None notable.