Astrodome Robot, early 90s –

Does anybody remember a robot that patrolled events at the Astrodome in the early to mid 90s? He was my friend, but I'm not sure what model he was. He might have even been an early security robot since he was on patrol, but he was probably completely controlled remotely by a human that could even talk through his speaker (I'm pretty sure). Lmk if you know the model, and if he was fairly well-known around the dome in that era. Did he have a name?