Which character was upgraded to regular cast status in Full House season five?

Kimmy Gibbler was upgraded to regular cast status in Full House season five.

Played by Andrea Barber, Kimmy began as D.J. Tanner's recurring next-door neighbor and best friend. Her loud personality, unusual habits, and constant presence in the Tanner household made her a popular comic foil even though she was not initially part of the principal cast.

By season five, Kimmy had become important enough to receive regular-cast billing. The promotion reflected how much the series used her in D.J.'s school stories, friendship conflicts, and family-centered plots. She remained a regular through the show's eighth and final season.

The other choices were recurring or guest characters at different points. Denise Frazer was Michelle's friend, Gia Mahan was associated with Stephanie's stories, and Vicky Larson became Danny's romantic partner, but none was the season-five cast upgrade described here.