Satoru Takanashi. An animal lover who is reliable and grandfatherly.

Everyone is kind and loves animals. Includes both men and women. There are keepers for monkeys, pandas, lions, koalas, birds, reptiles, elephants, giraffes, and bears.

Riko Usami. A cringey, fake-cute girl with twin tails. Assigned to small animals (rabbits, chicks, guinea pigs, etc.). Lazy, doesn't care for animals, and is a total nuisance.

People of all ages and genders. They are all kind people who love animals.