The Thing 3 is a science fiction horror movie starring Danielle Panabaker, Kay Panabaker, Chelan Simmons, Ryan Merriman, Odette Yustman, Meagan Good, Dakota Fanning, David Paetkau, A.J. Cook, Megan Fox, Crystal Lowe, Michael Cera, Jesse Metcalfe, Ashanti, Ellen Page, Seann William Scott, Ben Foster and Woody Harrelson.