A.K.I. (アキ Aki?, Simplified Chinese: 阿鬼), also known as Phantom (鬼 Yūrei?), is a video game character from the Street Fighter series, who first appears in Toxicity, a Street Fighter V side story in the Shadaloo Combat Research Institute, and as one of the new characters in Street Fighter 6 & a Year 1 DLC character. She is a student of F.A.N.G and an assassin who mastered the uses of poison and unconventional fighting techniques.