Role in the Series
Kelly first appeared in "Goblin Dogs" as part of a long line of customers who want to by Goblin Dogs. She saved a spot for Pony Head, Star, and Marco. While waiting, Marco tried talking to Kelly, while she remained silent. By the end of the episode, Kelly finally spoke up when her friends questioned whether or not Goblin Dogs were real.
Kelly appears twice during the second half of season two. In "The Bounce Lounge", Kelly joins Star, Pony Head, and the rest of their old Bounce Crew in saving the Bounce lounge from being closed. In "Starcrushed", Kelly helps Star get her mind off her strained friendship with Marco, and was present when she confessed her crush for him, just prior to her return to Mewni. In both episodes, she had a continuous on and off with her relationship with Tad. She broke up with Tad for good in "Lava Lake Beach", and Marco helped the both of them through their breakup. At the end of the episode, Marco and Kelly watched the Underworld's Soulrise together, and Kelly wished him a happy birthday.
- When her hair covers her whole body during her first appearance, she bears a strong resemblance to Cousin Itt from The Addams Family.
- According to "Kelly's World", her species is called the Wooletts.