Feel free to create a goblin shaman or similar if you want their religion to be part of the story. Other than that, not many ranks are specified, so feel free to create team captains, guards ...

Conducting a series of increasingly sick rituals - involving the ashes of a gnome and silkworms fed fat on the corpse of a dwarven cleric - the goblin shaman Kirruk Redrats created this deadly bow.