It seems as if this version of Ryu is a direct port from the first installment of the Street Fighter series. While it may have the same moveset, it opts for more custom gameplay, but possibly takes cues from later installments of the franchise.
Despite Street Fighter having either a two of six button layout in its original arcade iterations, Ryu uses four buttons: (X), (Y), (A) and (B). Other than that, Ryu manages to be somewhat faithful to the source game, aside from better functioning Specials and the addition of two Hypers.
Being based off one of the earliest fighting games ever, way before the discovery of combos, comboing isn't quite Ryu's niche. That being said, it is still able to rack up combos consisting of a few hits. To counterbalance this, its Specials and Hypers are more powerful, but are still balanced enough.
Ryu's A.I is medium. It sometimes has bouts of aggression, using Specials and Hypers diligently, but overall, isn't too difficult.
Hovering the mouse cursor over the Command Input icons will display text that refers to the inputs set in M.U.G.E.N's Key Config.
Icons encased in square brackets [ ] require the respective button(s) to be held down. Hovering the mouse cursor over the icon displays the hold duration if applicable.
(X) or (Y)
Super White Fire
(X) or (Y)
Uses 1000 Power
This character does not have any victory quotes, meaning it uses the screenpack's default.