These are all the costumes that were used by the Demon Bull King or his known forms.
Current: After his imprisonment, the enhancements provided by Red Son have made the Demon King into a cyborg. He now dawns silver and orange armor on his body with a glowing orange reactor in his chest.
Empowered: With the Golden Staff, the Demon Bull King's right arm replaces with an arm cannon and grows two cannons on his back.
Possessed: While being possessed by the White Bone Spirit, the Demon Bull King looks similar to his empowerment statement but with the armor having two canisters instead of cannons and the orange coloring on the armor being blue.
In his original form, the Demon Bull King is a gigantic, muscular, yellow-eyed, purple/grayish fur-colored anthropomorphic ox who wears gray/silver colored armor and a cape.