Tommy Madigan is a a villainous character in Goosebumps 2: Haunted Halloween. Tommy alongside his friends, bully Sonny Quinn and Sam Carter. Later in the film, his pants get pulled down when Slappy uses his powers to knock him off his bike with a garden hose. After the Halloween decorations come to life, he gets lifted up into the air by the witches after being threatened by Sarah Quinn. At the end of the film, he is dropped due to the fact that the witches were sucked in the book which we will assume was holding him.
At the start of the film, he is shown as a bully when he encounters Sonny and Sam at school by spit-balling them. Later, he and his friends encounter the two, in their Junk Bros job. They steal the Haunted Halloween manuscript, but when Slappy uses his powers to pull down Tommy's pants, they begin pursuing the boys who retrieve Slappy on their bike. Within their chase, Tommy and his friends are defeated when Slappy uses his powers to summon a hose that knocks them off their bikes. The next time we see them is while toilet papering Principal Harrison's house where they get kidnapped by the witches. Later on, Tommy finally reformed in the end and became best friends with Sonny and Sam.