DJ Tanner
Donna Jo Margaret "D.J." Tanner-Fuller (portrayed by Candace Cameron Bure) is Danny and Pam's oldest child. Over the course of the show's run, D.J. attends Frasier Street Elementary, Van Atta Junior High and Bayview High School. In the pilot episode "Our Very First Show," she ends up having to share her bedroom with Stephanie in order to allow Jesse to move into Stephanie's old bedroom; due to problems with privacy regarding Stephanie, in the season five episode "Take My Sister, Please," she sells Danny on an idea to switch rooms with Michelle, who in turn would move in with Stephanie (only after convincing Michelle to move in with Stephanie, after she rejects the offer to move in with her older sister).
In Fuller House, D.J. is a recent widow and mother of three kids Jackson, Max, and Tommy Jr. after her firefighter husband Tommy Sr. dies in the line of duty and lives with Stephanie and Kimmy. D.J. is similar to her father Danny and becomes head of the household and her sister Stephanie and childhood best friend Kimmy helped look after her sons and Kimmy's daughter. D.J. has since become a veterinarian. When her boss retires, his son, Matt Harmon, and D.J. take over the pet clinic. Matt and Steve fight for D.J.'s affection, but both end up dating other people after D.J. says she's not ready to commit someone new yet. Realizing they have feelings for each other, Matt breaks up with his girlfriend and starts dating D.J. On the way to Steve's wedding in Japan, D.J., wearing a sleeping mask – and thinking she's talking to Kimmy – unknowingly tells Steve that she was going to pick him over Matt, and she feels like she's losing her soulmate.
Credit: Wikipedia