|Nicknames||Chaos Karma Dragon|
Tiamat has the appearance of a blue Western Dragon.
In her human form she has long beautiful pale blue hair and a cold atmosphere that radiates from her beauty.
One of the Five Great Dragon Kings, Tiamat is one of the few legendary Dragons that are still active. She is known to be rampaging around the world occasionally.
While Tiamat has yet to appear in the series, she was mentioned in the side story "The Familiar's Requirements" by the Familiar Master as a candidate for a powerful Familiar.
She was mentioned once again when Issei and Azazel were talking about the Evil Dragons. During the conversation, Tiamat was said to be the strongest among the Five Great Dragon Kings and has blended in well with the current world and living as she likes.
Tiamat made her first official appearance in Volume 19. She appeared in the Rating Game between Diehauser Belial and Riser Phenex after the retiring system didn't work on Riser and Ravel. It was revealed that Tiamat acts as the secret judge/administrator for the Rating Games and only appears when something unexpected or malicious things happen. She does this as she is indebted to the Maou Ajuka Beelzebub and has appeared only twice in the past to resolve things for the games.
At the end of Volume 20, Tiamat accompanied Ajuka who was conversing with Shiva about Trihexa's reincarnation, she shows Shiva a blue mobile phone noticing that it was related to a Longinus.
Powers & AbilitiesEdit
Shapeshifting: Tiamat has the ability to shapeshift from her Dragon form into a human form.
Immense Strength: The strongest Dragon King out of all the Dragon Kings. According to the Familiar Master, she has Satan-level powers.
- Tiamat's name is derived from the Babylonian sea goddess Tiamat. Also, Tiamat's title, the Chaos Karma Dragon, is derived from the fact that the mythological Tiamat is a chaos monster.