3D rig of a muscular goblin without a shirt. The character should have a strong, athletic build with exaggerated features such as large ears, sharp teeth, and a mischievous grin. Ensure the rig includes fully articulated limbs, a flexible spine, and detailed facial expressions that convey a sense of strength and agility. The textures should highlight the rough skin and natural markings, and the character should be in an a-pose.