He and his brother Matt are Mayor Murdock's sons. They do not enjoy Elizabeth's classroom report about Briarville's legend of Trantor the Troll and Phineas Worrell. The two boys later destroy Kenny's cardboard haunted house. Both of the mayor's sons are eventually mistaken for trolls by Ernest, but nobody believes him (especially Sheriff Binder). Mike teams up with Kenny to defeat Trantor and other trolls after Matt became one of Trantor's wooden dolls during Briarville Elementary School's Halloween bash. After arriving at Hackmore's homeland, Mike in his vampire costume uses a water gun to squirt milk at some of the trolls in order for them to disappear forever. After Ernest defeats Trantor, Mike and his father reunite with Matt who is a normal person once again.