The TW Network
 Teenage Mutant Ninja Turtles Fighters
Fighter ID:
 Password
Birthplace
Japan
Eye Color
Black
Hair Color
Black
Idols
The Shredder
Fighting Style(s)
Foot Clan Ninjutsu
Occupation
Leader of the Foot Clan, United States branch
Relations
Oroku Saki ("The Shredder", adoptive father in some continuities), Daughter (unnamed, deceased), Motoko (Great-Granddaughter)

Games
Teenage Mutant Ninja Turtles: Tournament Fighters (SNES) / Teenage Mutant Ninja Turtles: Mutant Warriors (JPN)
Super NES
 Playable via code.
Teenage Mutant Ninja Turtles: Tournament Fighters (Genesis)
Genesis
 Unplayable without use of outside cheat devices.
Teenage Mutant Ninja Turtles: Smash-Up
Wii
 Unlocked by choosing the Karai trophy after completing Arcade Mode.

Storyline
Teenage Mutant Ninja Turtles
A Turtles Tournament
Karai in Japanese roughly translates into "extremely severe." It is a name that Karai more than lives up to. Second in the Foot Clan only to Shredder, Karai wields a Katana with a master's touch and brings the pain to those who test her.
Shredder
Parent
This relationship has only been confirmed in the 4Kids cartoon and the action figures of the 2007 film "TMNT".
Heroes in a Half Shell
A high-ranking operative of the Foot Clan in Japan, Karai comes to New York to take control of that branch of the Foot after Shredder's defeat at the hands of the Teenage Mutant Ninja Turtles. Although she initially is antagonistic to the Turtles, they initially forge an uneasy truce.