Ratar-O is the twenty-third episode of ThunderCats Roar, the 2020 TV series.
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Text taken from Cartoon Network's Website.
Season 1 - Episode 23
The ThunderCats have gotten so good at defeating the Mutants of Plun-Darr that it's basically become routine. That all changes with the arrival of the Mutants' old leader: Ratar-O, wielder of the Sword of Plun-Darr! Uh-oh!
- Lion-O notes he remembers Ratar-O from the story Jaga told.
- Tygra also brought up that it was assumed by Jaga that the Sword of Plun-Darr was destroyed too.
- One of the rides at Berb World, the "Swingin' Jaga" suggests the Berbil's know at least some of the history of Thundera. Jaga notably looks like when he was alive, and not his ghost form.