An old CG Show

[Darco]

I was wondering, if anybody remembered the name of this show that used to be on fox on saturday mornings. I know the name of one of the main characters was Tachi, and his mech had swords. The show was about two teams that would constantly battle in mech suits for prizes or something like that. And the show was done completely in CGI.
Im not sure if anybody knows what Im talking about, or if that is even enough information to describe it but this has been bothering me because I cant remember the name of it. I think it had Robo in the name, but i could be wrong. And no, Im not talking about robotech.

[Dootuz]

Maybe csoutom robo? or was that a gamecube game umm.......