Sinon is a more serious character, she usually doesn’t think too much before talking though. She is quick to point out when someone is acting stupid 

and she naturally strives to get better at the game. Sinon in real life is a bit more reserved but a major smart ass when she REALLY feels like it.

Sinon’s voice should be a medium to low range teen to young adult female. Gravely, sarcastic, and monotone. She doesn’t like many people, and keeps to herself mostly, her close friends being an exception. Acceptably slow, and analytic speech patterns.