Atsuko Tanaka
is a fictional character in the "Final Fight" and "Street Fighter" series of video games. Created by Akira Yasuda for Capcom, Poison first appeared in the original "Final Fight" alongside a similar character, Roxy, later appearing in Capcom-produced games, media and merchandise related to the "Street Fighter" franchise. She is voiced by Atsuko Tanaka since the "Street Fighter III" series and Masae Yumi in "".