Crimson Viper (クリムゾン・ヴァイパー Kurimuzon Vaipaa?), also known as either C. Viper or by her true name Maya (マヤ?), is a video game character from the Street Fighter series, first appearing in Street Fighter IV. She is an undercover CIA agent who fights using an assortment of gadgets hidden within her battle suit. She is the first female fighter to have a daughter.