Domitius Major is a fictional character from Transformers: Hearts of Steel, an alternate-history Transformers comic set in the late 19th century. He is a human military figure associated with the era’s industrial and technological ambitions, serving as part of the story’s human side rather than as a Transformer. In the narrative, he helps frame the conflict between the Autobots and Decepticons within a steampunk-inspired historical setting, contributing to the military and political backdrop that shapes the series’ events.