Hugo Myatt (born 1945) is a British actor, presenter and theatre director, best known for his role as the dungeon master Treguard in the children's game show Knightmare. Knightmare Myatt played the role of Treguard of Dunshelm, the dungeon master and presenter of the Children's ITV game series Knightmare throughout all eight series, between 1987 and 1994. Myatt met Tim Child, the creator of Knightmare, while Child was working as line producer on Anglia Television's regional news programme About Anglia with his wife, presenter Christine Webber. Child believed that Myatt was ideal for a dungeon master role, and arranged to make a pilot, Dungeon Doom. A few months after the first pilot a second pilot was made, which was renamed Knightmare. The second pilot was successful and a series was commissioned. Myatt's Treguard became the only character to appear throughout all 112 episodes that were made over Knightmare's eight series. Myatt ad-libbed some dialogue, with "Ooh, nasty!" becoming a series catchphrase. In February 2004, Myatt reprised his role of Treguard for the first time in 10 years with a single appearance in the television series Dick and Dom in da Bungalow. Myatt remained locked in a cage for the entire production, and did not speak during the episode, except for a single line, "Ooh, nasty!", at the end. A few months later he returned to the role of Treguard once more with an appearance in the pilot episode of Knightmare VR, an intended update of the original Knightmare television series. On this occasion Treguard's role was reduced, he was no longer the presenter of the show, and was present only as a disembodied avatar of Myatt that assisted the dungeoneer with snippets of advice. In 2013, he played Treguard again in a 2013 YouTube exclusive episode. Other roles Myatt continued to appear in a variety of roles in television, movies, audio productions, computer games and pantomime. In 1996 he played the character of Stephanos in the Ancient Greece unit of the BBC Schools series Zig Zag, and in February 2000 he played "The Count" in an episode of the BBC television series ChuckleVision entitled "Out for the Count". He also provided several voices for the English version of the Dutch children's animated series Alfred J. Kwak. Outside children's television, Myatt has produced numerous computer security training videos, and has appeared in a crime reconstruction on Crimewatch. In 2005, he appeared