Thunder was a Football entrant from Techno Games 2003. It was actually called Lightning and it entered in Series 7 and it had previously failed to qualify for Series 5. It entered the Tag Team Terror with The Steel Avenger in Extreme 2. It is now retired but is kept in working condition in case an Eighth Series of Robot Wars is announced.
It worked with Tin Tackler in the Football, forming the Team Flash. The Mouseketeers was the first team to lose to Team Flash, losing two-one. Team Flash lost their match Storm Chaser & Sprocket 3-0 in round 2 or 3.