There is only one giant moat monster, living in the castle moat. It has invaded Castle Daventry's moat and has been problem for the Royal Guard and King Edward, as its been attacking and eating the guards and knights of Daventry. They hope someone could come along and rid the of the pest. Gwendolyn points out that there are fresh and seawater version of Moat Monsters. She also indicates that there are no Moat Monsters in her day. She wonders if they can be trained, but Graham tells her that is foreshadowing. There is however a new moat monster in Graham's senior years.