Kat 3, alternatively Kat3, was a heavyweight robot which competed in Series 5, 6 and 7 of Robot Wars, also appearing in Extreme 2, Season 2 of Robot Wars: Extreme Warriors, and Nickelodeon Robot Wars. The successor to Kater Killer, Kat 3 enjoyed more success by reaching the Heat Final in the Fifth and Seventh Wars, also placing in the top four in the All-Stars tournament in The Seventh Wars. The team also won the Sportsmanship Award in Series 6.