Squid Girl also known as Ika Musume Squid Girl is immature and often gets into mischief as is naive and ignorant of human customs and life. She is Easily irritated when her invasion plans don't work or people don't take her seriously but is kind-hearted. She likes to showcase her unique squid-like powers, especially when she believes humans can't match them. She is also environmentally conscious and will pick up trash off of the beach. She's also a fast learner who can master complex things quickly. She's afraid of natural squid predators like sharks and killer whales. Her quirks is she says de geso at the end of her sentences and uses fish related words in her speech. She recognizes other squid by their mantles, like her own hat, which can lead to comical misunderstandings. She loves shrimp and likes video games. Squid Girl comes from the sea and wants to invade humanity to punish them for polluting the ocean. However, after damaging a beach house, she's forced to work as a waitress to pay for the damages. Her abilities is extending her tentacles, Regenerating severed tentacles, spewing squid ink, glowing in the dark, swimming and breathing underwater and weight shifting from her bracelets. Cindy's three scientists friends showed off one of there inventions and it misfired and hit Squid Girl. It suddenly caused Squid Girl to get taller and more mature looking. She was upset about the three scientists antics but calm down enough to be pleased by her new appearance. Squid Girl is a mature looking humanoid woman who is in her 20s and is 5'8 feet tall with blue tentacles for hair, blue eyes, large breasts, slim figure and wears a white cap, and a white dress with blue bracelets and anklets and white shoes. Her cap is actually part of her head and is fused to her scalp, so removing it would be fatal.