Cassius

Cassius, a competitor robot from the 2nd & 3rd series, was a wedge shaped robot from Stowmarket, in Suffolk. Its main weapon was a forward-hindged flipping arm which had enough power to overturn even many of the house robots over. The second version of Cassius also had a rear spike. Cassius reached the Grand Final in Series 2, where they placed 2nd overall, but fell relatively early in Series 3. The team also competed in Series 1 with Recyclops.

Although not the first robot to attempt it, Cassius was the first robot to successfully use a self-righting mechanism, or srimech. When Sir Killalot flipped it over during the Pinball trial, Cassius used its flipping arm to throw itself back over onto its wheels, which allowed it to score some more points. Since then, the Srimech became something of a Robot Wars essential.

Cassius was created by former children's TV presenter Rex Garrod. He was very much a sporting person, and would prefer to attack a house robot rather than a competitor that had already been beaten. Cassius was retired after Series 3.