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Cammy is a 19-year-old agent of the fictional Delta Red task force within MI6. In the Japanese version of her ending, she is revealed to have been an agent working for M. Bison in the past, but lost her memories during a past operation. In the English localization of the game, this was changed into revealing that Cammy was Bison's lover.
A younger version would be included in the crossover game X-Men vs. Street Fighter, which features Cammy as a Shadaloo assassin codenamed Killer Bee. The ending of the game alludes to Cammy's memory loss and her eventual joining of Delta Red.
This incarnation of Cammy would be integrated into the main series: first in Street Fighter Alpha 2 Gold, where she appears as a hidden character available exclusively in the 2-Player and Training Modes (however, this would be rectified in Street Fighter Alpha Anthology where she would be fully playable in Arcade mode with a complete storyline and ending), and then in Street Fighter Alpha 3, where she is a full-fledge playable character. In Alpha 3, Cammy is revealed to be a clone created from M. Bison's DNA. The Game Boy Advance version of Super Street Fighter II Turbo: Revival takes into account this revelation in their version of Cammy's ending.