Thread:The S/@comment-4890867-20180616183853/@comment-93957-20180616222224

The old official site calls it mostly just "robot", although there are a few descriptors:

Mirage: Foot 'bot

2003: Killer robot, mechanoid, mechanical monstrosity

Obviously it's not a Foot bot in 2003, and killer robot is used the most throughout the 2003 episode summary.