Tah Lord is a Halo 2 XBOX live legend who uses a special hack/mod so nobody can see his profile, track him down. The only way to see him is by playing against him but he only plays slayer and 1 on 1. There is a Tah Lord in Halo 3 but he is just an impersonator of the real Tah Lord. It is rumored that he pays double for the XBOX live subscription so Bungie won't mention him.