The IMDB.com has been updating its pages for the new episodes that are currently in production. They state that Episode 2, which is believed to have the working title Knight Fever, features actor Jeffrey Pierce as “Ryan Arrow”, and that Yancey Arias will be introduced as “Alex Torres” — a new recurring character. Pierce has previously appeared in Journeyman, Fear Itself and The Nine, while Arias has extensive credits in shows such as CSI, JAG, Law & Order, Charmed & NYPD Blue.
As with the earlier IMDB info, treat as speculation for the time being.