Fat Boy Tin was a competitor robot that appeared exclusively in Series 4 of Robot Wars. It was easily defeated in its only battle, and did not appear for any other series thereafter. The team later entered Shell Shock into Series 7, which also lost in the first round. Shell Shock also failed to qualify for Series 6, and is often believed to be inspired by a live snail that was found in Fat Boy Tin after its Series 4 battle (see Robot History). Fat Boy Tin's name is most likely a pun on Fatboy Slim, the stage name of English DJ Norman Cook.