Keyring Anime

When night falls and the human kids from Freemont Elementary have all gone home, these wacky monsters creep out for their own slapstick adventures. Together, a vain Vampire, a happy-go-lucky Goblin, a smelly Zombie, a snuggly Frankenstein and a mischievous Ghost share a common bond and friendship in their adventures at night school.

(Source: Amazon Prime)

The second season of Spookiz.

The third season of Spookiz.

The fourth season of Spookiz.

A plucky student stumbles upon the secret life of young monsters who come out to learn and play when night falls at her elementary school.

(Source: Netflix)