51 was a Heavyweight robot, built by Team 51 who also entered Series 6 and 7 of Robot Wars with U.F.O. 51 was not entered into any series of Robot Wars. 51 was armed with a small lifter and featured two models; one with a hexagonal body, the other with a longer body closely resembling the Series 6 version of UFO. The longer model of 51 entered the Assault Course in the 2003 series of Techno Games, where it reached the second round after completing the course in 34.90 seconds, 0.19 seconds faster than Brutal Beetle. However, it subsequently lost in the following round to Mighty Mouse, and in the first round of the Sumo competition against V-Bot. As in Series 7 of Robot Wars, team captain Pete Withers was unavailable for filming, so Mark Hamilton stood in as deputy captain.
51 also entered Live Events such as Robot Crusade 2003, where it reached the Final of the Saturday tournament where it lost to The Stag, a robot that had previously beaten it and Draven in the first round.
- Wins: 3
- Losses: 4