Currently looking for an old mechanic anime that was on Comcast on demand in early 2000s.

Currently having that frustrating brain fart about an old anime I can't remember the name of at the moment. It was in the early 2000s on comcast on demand yes I'm old where it had pilotless techs that protected a highschooler i think it was. One of the things that keep scratching the back of my mind is that one of them was voiced by Steve Blum (toonami guy).