Michael "Mike" Hanlon is a major protagonist of the Stephen King multiverse.
Serving as one of the main protagonists of the 1986 horror novel IT, a mentioned character in 11/22/63 (novel) and Dreamcatcher. He is also a minor character in Insomnia.
In honor of the spooky season, here are what fictional characters do for Halloween. Credits of Fanart: Luxojr888 https://www.deviantart.com/luxojr888/art/FOR-CANDY-Happy-Halloween-2018-770634899