Otacon: "Those aren’t pajamas, Snake, its a Gi worn by Martial Artists."
Snake: "Martial Arts huh? CQC against Kung Fu... Should be interesting."
Otacon: "I'd be careful Snake. His name is Ryu and is very strong in both physical power and in the mind."
Snake: "So... He wouldn’t be able to stop any of my weaponry."
Otacon: "That’s not the point. Ryu has had years of training and has the power to produce the Hadōken Fireball. The art is known only to the Ancient Masters. He must have been lucky to be trained in their art."
Snake: "A normal looking guy who shoots fire balls... Great. What else does he have packed away?"
Otacon: "Well as far as realistic abilities go that is about it. His physical training has allowed him to use powerful techniques such as a rising uppercut and a tornado kick... What you would like to know is that he's always looking for a more difficult challenge."
Snake: "A Challenge... Well, looks like I’m his new sparring partner..."
Ryu defeated M. Bison, proving that no matter what world he was in, he could still come out on top. He left M. Bison there, and travelled back to his world. He now had to defeat Ken, his long time friend/enemy.
Playable Characters in Super Smash Bros. Smash Wars