Mirror is the Twain Cottage fixer. He usually has a skin field that's totally reflective, hence his code name. He's an involuntary warper.
Working with Zenith, he scheduled Toni's fight with Montana.
At a Faction Three meeting he insures that Monty tells all the details about the fight and what led up to it to Lazuli.
He accompanied Aquerna while she talked with Jobe, and then provided her with her initial directions to the Chemistry Lab where Hazmat was hanging out.