Thustra/Legends

Thustra's sentient species are the Sephi. During the Clone Wars they were reigned by King Alaric. They had lost faith in the Republic and were on their way to join the separatists, as Republic forces landed on the planet. The troops were nearly smashed by the Sephi. Master Yoda tried to persuade his old friend Alaric to capitulate, but he failed. King Alaric killed himself, and Thustra left the Republic.

The planet Thustra appears in the comic Jedi: Yoda by Hoon.