OK K.O.! Let's Be Heroes

Season 3, Episode 8

Episode Title: Planet X

Air Date: 2019-07-28

Overview:

Rad goes to Planet X to join his family reunion. Upon arriving he is shocked to discover that the majority of his family are nerds. He later learns that his grandfather, Coach, is a jock and that X-ians have been split into nerds and jocks after humans visited the planet years ago and shared many of their existing culture with them.