The Umbrella Academy S02e05 -

"Valhalla" provides the long-awaited backstory for everyone's favorite hyper-intelligent chimpanzee.

Reginald is seen reading Homer’s The Odyssey to baby Pogo in Ancient Greek—the same lines Five later uses to confront Reginald in 1963. "Twistin' the Night Away"

Flashbacks to 1962 show Pogo as a test chimp sent into space by NASA.

The fight is set to The Interrupters’ ska-punk cover of Billie Eilish’s "Bad Guy" .