Aku

==Weaknesses==
* Color Scheme: Aku's shapeshifting is limited to his color scheme and will remain red, black, and usually green (though not always) no matter what form he takes. While not particularly problematic with regard to combat, this can make disguising himself somewhat difficult (though he has still fooled Jack numerous times with his disguises, as Jack tends not to notice Aku's color scheme issues and, when he does see through Aku's disguises, it is because of Aku's personality rather than his colors).
* Reflection: Aku's own reflection will reveal his normal form no matter what he has shifted to look like.
* Magic: Though Aku cannot be harmed by normal weapons and attacks, he can only be harmed, defeated and vanquished by Jack's sword and other divine or mystical forces. For example, the Goddess of Water and her 3 elemental servants were able to harm and defeat Aku with very little effort, although not to the same degree as three 3 gods Odin, Ra and Vishnu. Since Aku was a fragment of the greatest manifestation of evil, he can be destroyed by the strength and purity of a human's (and likely any other living creature) spirit, as stated by Vishnu. Jack's katana is virtually the only item which can cause Aku damage that he cannot instantly regenerate from. For this reason, Aku is reluctant to confront Jack head-on.
* Illness: In one episode (XLIII), Aku appeared to suffer from flu-like symptoms, exposing an apparent lack of immunity to diseases. However, it is unknown how he managed to contract whatever illness he was suffering from.
==Powers and Abilities==
*Shapeshifting
*Superhuman Durability
*Immortality
*Regeneration (High tier)
*Dark Magic
**Necromancy
*Laser Eye Beams
*Pyrokinesis
*Scrying
*Time Travel (Portal)
*Teleportation
*Telekinesis
*Object Materialization
*Interstellar travel
*Electrical Discharges
*Weather Manipulation
*Premonitions
*Earth Manipulation 
*Possession
*Infection 
*Sonic Blasts
*Martial Arts Skills
*Super Intelligence