Julian the Apostate was a roman emperor who ruled from 361-363 AD. He is also known by other names such as Julian II, Flavius Claudius Julianus, and Julianus Apostata. He was known for his rejection of Christianity and his attempt to revive paganism in the Roman Empire. Julian was a controversial figure in history, with some seeing him as a hero of paganism and others as an enemy of Christianity. Regardless of how he is perceived, Julian the Apostate remains an influential figure in the history of the Roman Empire and the spread of Christianity.