Originally it was MXSter, he changed that one to Sauntam, then to Matt2Tees. All of which are just fine. The problem came from his duplicate account machinimatt, and from there he's added all sorts of other stupid ones. Another Chance, Another Chance 2, Tamtocs, RecycleYourself.
I have to give it to him, he's trying pretty hard to be sneaky, it's just not quite good enough.