Gi-Ant-O was a featherweight entry from Team Terrafonics, now known as Team Danby, which competed in the Featherweight Championships of the second series of Robot Wars Extreme and the seventh series of Robot Wars. Two different versions of Gi-Ant-O competed in either series, with neither progressing beyond the first round. Its name was a misnomer, as it was always considerably smaller than other opponents in its weight class, a trait which it shared with the team's heavyweight robots Tanto and Foxic.