Crimson Viper is a character in the video game, Street Fighter IV. At first, it looks like she's working for Seth, the main villain of the game, but it turns out she isn't. She's working undercover by the CIA, under orders to retrieve data on the BLECE project and kill Seth. Nevertheless, due to occasionally standing against other heroes from the franchise she is considered by the other heroes from the series a villain.
She uses her Battle Suit to fight her opponents, and it is equipped with electrical gauntlets that can make the ground shake as well as jet boosters in her boots that can be used as flame throwers.
Crimson Viper has a daughter named Lauren. This makes her one of the first mothers in the Street Fighter franchise.
She is voiced by Mie Sonozaki in Japanese and Michelle Ruff in English.