Thundercats Origins (2021 Animated Series)

Thundercats Origins is a 2021 animated series which tell about the world before the 2011 remake.

Story
Before the the earth was called the third earth it was called the first earth and it was ruled by one species,Humans until the Great Human War which whipped out all man kind to extinction, but the animals that survived the war lived on after words and with the lions the queen gave birth to a new cub the named Leo.