(Exceptional Knowledge) Kevin has black hair tied up in a braid, along with black horns and a swirl ahoge. He has a white book atop his head, and he wears black round glasses. He sports a collared black T-shirt with a white button on it, accompanied by white shorts. To finish his attire, Kevin wears white socks and black boots. He can often be seen holding a book. Kevin appears to spend most of his time reading. Despite his isolated personality, he can be friendly when unprovoked. Everytime he produces a S or Th or F or even a Sentence, he sometimes puts his tounge on his buck tooth to sound more nerdy.

Petunia is an anthropomorphic animal with long, white ears and a short, round fluffy tail. She has knee-length white hair and accessorizes with a crown atop her head. She sports a black collared shirt and white shorts. To finish her attire, she wears a black band on her left ankle. Petunia is known as the popular girl in the class, along with her friend Lizzy. She is kind and friendly, but can be rather rude when provoked. She likes to take selfies with Lizzy and cares about her appearance. Petunia does not like swimming classes, thus preferring to talk to Lizzy instead of participating in the class.

Lizzy has medium-length black hair tied into low twin tails with two white ribbons. She has black horns and a white crown with a small spiral atop her head. She sports a black collared dress, with two white buttons. To finish her attire, she wears black boots. Lizzy is nice and friendly, but when provoked, she can be rude. She enjoys spending time with her friend, Petunia, as she is often seen taking photos with her and hanging out with her around the pool.