She has pale skin and purple hair, no pupils and uses push daggers as weapons. In some occasions of the first comic, and in the second comic, she is seen with stripes on her arm and face. She is the only character that uses a Fatality-like move in the comic.
In the second comic, Sylence was helping Sonya and the team locate Jax and Mikka, whom were captured by the Black Dragon thug, Rojack. Sylence is a master of the art of stealth, hence her name.