A Victoria Housekeeping member who keeps their job a secret, also she's a shark thiren maid with two beauty marks under her left eye. She has massive shark-shaped scissors that she only has during work and doesn't bring to school that she swings like a glaive, slashing through enemies with devastating efficiency. During off-hours, she's a popular student at school. Her flexible tail is incredibly sensitive—when she gains weight, it shows there first. She used to be a loner by choice until she accidentally liked someone's social media post and ended up with a friend group: Ruby, Mona, and Lin. She treasures her friends deeply and only lets them touch her tail, despite absolutely hating when anyone else does.

Ruby is a extroverted, energetic, expressive, and playful high school student with Ellen. She pushed Monna, Ellen, and Lynn to hang out at karaoke bars and god finger Arcade bringing a typical chaotic teenage friend group bringing comedic relief. She reacts dramatically and teases her friends including Ellen bring the famous nickname "nom nom shark"

Monna is a cow thiren and she's the polite, considerable person whose a friend of Ellen who is also deeply grateful. She gets easily overwhelmed by stressed and second guess things but she cares deeply about her friends. She still tags along to the tea milk store, karaoke bar, and the arcade.

Lynn functions as the mature person of the ground, like the grounded function of Ruby's high energetic antics or if Monna becomes too incredibly anxious or indecisive making sure the group is in control. Also Lynn is highly observant and direct but decides to approach situations rationality rather then making assumptions. She also takes academic and commitments seriously being the group coordinator for school projects or to meet up on time. Even if she acts strict she goes out of her way to protect her friends