There was almost a Star Wars TV series long before The Mandalorian on Disney Plus!
George Lucas had been working on one called "Star Wars: Underworld" back in 2005, but supposedly scrapped it because it was too expensive to make. (Watch test footage and BTS green screen video below)
A YouTube video shows test footage and some green screen making of the show!
The bad ass green screen footage starts at 5:00 in.
(Photo: Getty Images / Johann Grange / EyeEm)