Harold Trumble, played by Gus Lynch, is a character in the film Halloween: Resurrection.
Harold is a mental patient at Grace Andersen Sanitarium. He is obsessed with serial killers, including Michael Myers seemingly soothing himself by reciting a killer's name and how many murders he had.
Harold has a habit of breaking out of his room, only to have to be tracked down my Willie Haines and returned. After Haines was killed by Michael Myers after thinking Harold had once again sneaked into the basement, Harold was starstruck to see Michael in person. Immediately reciting the murders of Myers as Myers handed him his knife to incriminate him with the murders of Laurie Strode and the security guards.