The Panthers of Xi were a ninja clan based in the town of Xi in Koryo. They controlled the Vorkani Mountains between Xi and the Malu River in the east. Their clanmaster was Lin Goh, the wielder of the Black Kumade. The Panthers adopted this as a symbol, and left a black-painted kumade (a type of weaponized rake) as a sign of their handiwork or passing. Around 1357 DR, the Panthers waged an ongoing war with the Vi'oontu ninja clan, who were based in Manchar.