|[List of appearances]|
Iron Baron is the former leader of the Dragon Hunters that reside in the Realm of Oni and Dragon. Sometime in the past, he encountered and faced the Firstbourne Dragon and lost his arm, leg and pride in the fight. He has since held a deep vendetta against the Mother of Dragons and has intimidated his tribe to be loyal to him and hunt dragons for food and to exploit their elemental powers. He was eventually defeated by Master Wu and the Firstbourne and sealed in molten rock.
- As a result of peg-legged minifigures always featuring a right peg leg, his minifigure has the peg leg on the right while his show counterpart has it on the left.
- His voice actor, Brian Drummond, also portrays the voices of Kruncha and Nuckal, also Ninjago characters.