|Leader||Yellow Musk Creeper|
|First Appearance||Thornback Clan p.168|
The Thornback Clan of orcs was at peace with the Goblin Adventuring Party's clan in the past. However, when the goblins encountered them in the Swamp of Silence, they were extremely violent. Also, they had plants growing out of their heads. It turned out that they had been infected (or possessed) by seedlings of a massive sentient plant identified as a Yellow Musk Creeper. The orcs attempted to capture the goblins and bring them to the Creeper.