- "Welcome to our special Grudge Match edition of Robot Wars. Over the course of the last two wars over 150 teams have competed and things have turned a bit nasty. Some people haven't been happy with our Judges' decisions, others have made enemies and wanna sort them out, some just want revenge and hey, if people wanna fight who are we to stop 'em. Over the course of the next half-hour prides will be dented, scores will be settled and grown men will be reduced to tears and we're gonna love it!"
- — Craig Charles
After the main competition of Robot Wars: The Second Wars, a special episode was shown featuring a number of Grudge Matches. This gave robots the chance to settle old scores and also allowed robots that did not feature in the main series a chance to battle in the arena.
- Judgement Day - Two separate vengeance battles, both involving Mortis. It took on Cassius and later Napalm to settle a grudge in each of the first two wars. Both won by Mortis.
- Reserve Rumble - A one-off battle between five robots that were rejected from the main series. Won by Jim Struts.
- Inferno Insurrection - An exhibition match where Nemesis and Stock Robot Ramrombit were sprayed with paraffin then set alight by Sergeant Bash.
- Super Showdown - The final of the only Super Heavyweight Championship held in the history of Robot Wars. Won by Kick Robut.
- Internet Insurrection - A melee contested by four teams with the belief that they had the best website. Won by Griffon.
The episode featuring The Grudge Matches was originally broadcast on March 12 1999. The broadcast managed to attract 5.17 million viewers, a decrease of 1.77 million viewers when compared with the previous episode. According to BARB, this meant it fell to second in the top thirty highest rated BBC 2 broadcasts during 8-14 March, behind Red Dwarf.
- "Thanks for watching our Grudge Match special. That's all the scores we've got time to settle. Now remember we don't suffer fools and we don't like bores but we do get even, on Robot Wars."
- — Craig Charles' sign-off