Yellowtusk lives up to his title, and despite his strength, he is shown to be the smartest of the Brotherhood. He is also rather quiet. Peng cares deeply about their sworn brothers, but they prioritize their own security and well-being even more highly. This means that if they are in a dangerous situation, they would put their own needs before those of their comrades, even if it means leaving them behind. Peng is an aqua-feathered demon that has an orange beak and fuchsia eyes.