Misconception: Buddha was fat.
Truth: Historically Buddha was not obese. The "chubby Buddha" or "laughing Buddha" is a 10th-century Chinese folk hero who went by the name of Budai. In Chinese Buddhist culture, Budai came to be revered as an incarnation of Maitreya, the Bodhisattva who will become a Buddha to restore Buddhism after the teachings of the historical Buddha, Siddhārtha Gautama, have been forgotten.