Steelbane is a fictional Autobot knight dragon from Transformers: The Last Knight. He appears as one of the ancient Transformers hidden in the ruins of Earth and is associated with the Knights of Iacon. In the film, he serves as a guardian figure and combat ally, helping reveal the history of the Transformers’ presence on Earth. His role is mainly to support the protagonists by providing lore, protection, and a powerful presence in battle.