Sojiro Kusaka is an anime hero and a shape shifter swordsman, who in the series was a rival with his old friend, Toshiro Hitsugaya. His true purpose is to find the Oin, an artifact which belongs to the Soul's Society
Royal Family. His first appearance was from the anime movie "Bleach: The Diamond|Dust Rebelion" and it's spin offs video games "Bleach:Heat the Soul 5,6 and 7". Although he didn't appear in the villains tournaments, his dragon form is featured in the Non Disney Villains Tournament.
Non Disney Villains Tournament
To see his actions in this tournament, see Dragon Sojiro Kusaka and Mrazomor