A cold and reserved young man who wields a spear known as Cloud-Piercer. He's calm, level-headed, and pragmatic. He acts as the Astral Express' guard on its long trailblazing expedition. He also administer the train's data bank and meticulously keeps it updated and orderly. Dan Heng never talks much about his past. In fact, he joined the Astral Express Crew to escape from a past of his own making. But can the Astral Express really help him outrun his past?