A Japanese Shotokan martial artist in Street Fighter. Ryu lives for the fight and the challenge and travels the world looking for fights to help him grow as a warrior and a person. In manga and the game storyline he has a love interest in Chun-Li. Ryu also has an American friend and rival named Ken.
There's totally this kid at Cam-win's school named Ryu. Yes, after the Street Fighter character. However, he thinks it's really unfortunate that everyone (including his parents) pronounce his name as "Rye-you", when the SF character's name is pronounced "Ree-you". Cam-win has not pointed this out to anyone at school, though, for fear of being pelted in the face with a brick.