Sui Gu Wikipedia
Sui Gu (died 200), courtesy name Baitu (白兔), was a vassal serving under the warlord Zhang Yang in the late Eastern Han Dynasty. When Zhang Yang was killed by Yang Chou out of fear for him joining Lü Bu, Sui avenged his lord by killing Yang Chou. Afterwards, Sui Gu went on to serve under Yuan Shao. However, Sui Gu was attacked and killed by Cao Cao's forces during the Battle of Guandu.