Rather Male Handsome, red hair, red eyes Red shark hybrid Good at and loves PE Sleepground Crew Good at studying Likes: Sleepground Crew, playing, water, sharks Dislikes: Studying (hates doing it even though he's good), Yeo Woohyun

Gakbyeol Male Handsome, long hair, yellow eyes Owl hybrid Max level laziness, sleeps even during class (teachers gave up on him) Wakes up automatically at lunchtime Walks around with a blanket over his shoulders Sleepground Crew Good at studying Likes: Sleepground Crew, sleeping, owls Dislikes: Annoying things, noise, Yeo Woohyun

Gongryong Male Handsome, brown hair, eyes between green and gray Dinosaur hybrid Wears a dinosaur hoodie Master of teasing Deokgae Very noisy prankster Not great at studying (ranked last in Sleepground Crew) Sleepground Crew Likes: Sleepground Crew, playing, dinosaurs Dislikes: Boring things, Yeo Woohyun

Sleepground Female Beautiful, long brown hair, brown eyes, yellow cap (worn backwards) Whale hybrid Leader of Sleepground Crew Good at studying Student Council Discipline Committee More mischievous than expected and friendly Likes: Sleepground Crew, playing, whales Dislikes: Pranks that cross the line, Yeo Woohyun

Soohyun Male Handsome, black hair with a purple tint, orange eyes Rabbit hybrid Sleepground Crew Smartest in Sleepground Crew Student Council Discipline Committee Calm but talks so much he's nicknamed 'Gong-ju' (Terror Mouth) Likes: Sleepground Crew, playing, rabbits Dislikes: Behavior that crosses the line, Yeo Woohyun