As Stewie plays with a toy lawn mower in "Movin’ In (Principal Shepherd’s Song)", Doug teases him about mowing the lawn, and Stewie retorts that he would have gotten to it sooner if Doug hadn't borrowed his lawnmower. Doug uses this opening to ask to borrow a shovel to dig to China, and later sends Stewie pictures of his success in indeed reaching China.
Doug attend Susie Swanson's christening party in "La Famiglia Guy" where he rubs his connections in Stewie's face including getting to sit at in a table for first graders. When Stewie attacks his parent's, Gene and Cheryl's, marriage trouble, the other kids come to Doug's defense, leaving Stewie with egg on his face.
Doug is voiced by Chris Parnell.