Tassa'to was a male Kilassin, a non-sentient species of giant lizard, that lived on the planet Cularin during the waning years of the Galactic Republic.


Tassa'to lived in the Coraqii valley, within the jungles of Cularin. He was the only Kilassin of his kind and every year, the Tarasin Hiironi irstat would send two of their best hunters to try and hunt Tassa'to. However, they never succeeded in killing their quarry and would always return to the irstat empty handed, with cuts and bruises that Tassa'to had inflicted on them