37 Cool concept!
MC Jang Su-Chan, Friends Park Hwejin (black, roach), Cheon Dohwa (grey, scorpion), Cha Hye Seong (orange, grasshopper).
Professor Ma Do Hyun (stache), Prof Ji Joon (beard), Prof Yoo Hwan-Yeong (red bob, healing firefly), Entomology Assisntant Ju Hyunbin (black pony, glasses).
Classmates: Bang Hyuna (orange, silkworm moth), her bestie Eong Da-Eun (green, thorn spider), Uhm Ji-Hwan (big black longhorn beetle), Hwang Rida (hoodie, antennas, 4 arms, poisonous moth). Yoo Chang-Hoon (black cap, spiky teeth, red hair, fire ant: acid), Seon Hana (grey-orange hair, flower cicada: aphrodisiac), Yoonhi (short black, mole?)
Bad guys "Pet Shop": Shin Gayeon (purple, mind control wasp), Breeder (lilac, water spider), Transporter Phil (green).
[Not bad but tricked by pet shop] Classmate Lee Junhyeong (black, mouth bandaids, bird eater tarantula, from same orphanage as Dohwa & allowed breeder to make the orphans into insects so they can become "stronger" but he just really turn them into slaves). Kim Mi-Hee (pink, mc liked her & saved her but she called him a monster).
Jungle Juice