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Molly is an octopus that Lisa saved and befriended while filming My Cephalopod Soulmate.

When Lisa was making a film underwater as part of the Future Nature Documentarians, she found Molly and decided to film her. During the film, Molly was attacked by a shark and seemingly killed by it. However, Lisa actually saved Molly from the shark, with the shark only biting off one tentacle. Lisa then took Molly home with her, while she ended the film with Molly seemingly being killed because they weren't allowed to interfere with nature.

After showing off her film at the festival, Lisa and Molly started to spend time together. However, Molly liked to escape and cause trouble around the house, using the pipes to get around. This led to Lisa getting an octopus-proof tank, which Molly still managed to escape. When Lisa found Molly in Santa's Little Helper's dog bowl, she decided to take Molly to school with her to keep an eye on her...