That is something I doubt anyone could truly help you with.
I can ask questions that you can try to answer for yourself but it's ultimately up to you:
Where does Ryu come from?
How old is he?
Is he a moustache-twirling villain? Or a vigilante? Or something else?
Has anything happened in his past that might make him speak a certain way (for example, having being in the army may lead a person to saying 9pm as 2100 hours)?
Then there's personality:
Is he chatty and talkative?
Is he wary of revealing too much information (this can still mean a character is chatty: it could be a smokscreen - keep them thinking I'm an airhead and they won't know I'm capable of lifting a truck, hacking a network, and eating a baloney sandwich at the same time)
Does he prefer actions over words?
Is he overly-dramatic (or prone to bouts of affected behaviour?)?
What does he like in others?
What does he dislike?
I could go on but this is sounding like a GCSE English Language checklist!
Try and get constructive feedback from other people? It doesn't mean that you have to change every detail of the character based on another person's dislike, but if a room of people find that a character's lack of social interaction jars then they will likely ignore that character in the end, because (well this is personal opinion) it's very difficult to play against someone who does nothing and says nothing. Even if a character sits there texting for an hour, some of my characters may consider this rude and make comments (especially if they're supposed to be chatting 
)
Oh and whilst you can't go far wrong in RP, there are some ways of doing it that just preclude any input from others:
They can be summed up by the phrase 'God-Moding': i.e. a the player of the character dictates everything, forcing actions and reactions on others without their consent.
This can take many forms.
The most common explanation is:
A: Captain Awesome shoots Evil Claw in the head, killing him
B
(bwuh??))
okay here is another question, when i role play with Ryu how would i talk,what would i say how would i put things? um having a hard time her please help?!
One by one bunny's steal my common sense for banana's on Ebay.