One of Shu Han's Five Tiger Generals and sworn brother to Liu Bei and Guan Yu. Known for his fierce temper and unmatched bravery. Famous for warding off Cao Cao's forces at Changban with his formidable roar.
Despite his brutish portrayal in popular media, Zhang Fei is said to respect gentlemen and disregarded commoners. In contrast, Guan Yu treated his soldiers well but was arrogant towards the gentry. Both traits contributed to their respective downfalls.
Source: Sanguozhi, Book of Shu, Volume 6: The Biography of Zhang Fei