Who was the only Roman emperor to convert from Christianity to paganism?

Emperor Julian, often called Julian the Apostate, was a unique and controversial leader of the ancient Roman Empire.

Born into a time filled with chaos and the rise of Christianity, Julian's path to becoming emperor was full of twists and turns.

Known as the last emperor to support the old Roman gods in a time when Christianity was becoming the main religion, Julian tried to bring back the traditions of the past.