Mertle Edmonds is an antagonist in Lilo and Stitch. She is Lilo's rival who is in her hula class and is a spoiled wealthy girl. She is also very antagonistic as she mocks Lilo for only having a sister be her mother-figure. She is 9 with curly orange hair, a green shirt, blue shorts and glasses; she's voiced by Miranda Paige Walls then by Liliana Mumy.
In Lilo and Stitch, Mertle is a young girl attending the local hula class alongside Lilo, Elena, Teresa and Yuki. She gets into a fight with Lilo during one of their practices. After Lilo adopts a "dog" named Stitch, Lilo introduces her pet to Mertle, Elena, Teresa and Yuki. However, Mertle openly expresses her disliking toward the creature, calling it "the ugliest thing she has ever saw."
In the official sequel, Mertle serves as the main antagonist. She enters a hula competition against Lilo, which prompts the latter to practice really hard, ignoring Stitch and putting a strain on their friendship.
Mertle is a minor character in the film, "Stitch the Movie!", appearing back and forth throughout the picture.
She became a recurring character in Lilo & Stitch: The Series. Throughout the series, it is established that she is from a relatively wealthy family and is a spoiled brat who lives with her mother. In one of the episodes, it is revealed that she keepsGigi (Experiment 007) as a pet, but does not realize she is an experiment. Mertle is also associated with Hämsterviel.
In the episode "Finder", she mistakes Dr. Hämsterviel for a gerbil and keeps him as a pet for a short time.
In "Shush", when her friends break up with her after Lilo wrongly thought she hated them, she teams up with Dr. Hämsterviel, who apparently turns her into an android in order to catch all the other experiments in place of Gantu. However, she was rescued by Lilo and Stitch, who took her to Jumba to de-robot her. Lilo tries to be friends with Mertle in several episodes, but this usually just results in even more social rejection.
She is rejected by her friends in "Tank" and teams up with Stitch to capture the experiment. They fail and are captured but manage to escape in Stitch's dune buggy while Gantu gets the experiment. She initially tries to tell her friends about it, but stops and becomes friends with them again.
In the RMCF series, she is shown to be as mean as she is in the show, but she is also jealous by the friendship Lilo has with the Rookies and how they solve cases like their teacher. In "RMCF: Goes Hawaiin", she is appalled about Lilo's story about the time the Rookies formed and stopped Discord.
- It may be possible that she'll get a teacher in one of the MCF's rivals specifically Emmy's rival.
- RMCF: Goes Hawaiin(Debut)
- RMCF: Love Trouble
- RMCF: A Chaos a Day