Xunyu is a character that appears in Soulcalibur III and Soulcalibur IV.
Soulcalibur III[]
Xunyu appears in Chronicles of the Sword, and was one of the few Rebels loyal to Girardot Argezas.
Soulcalibur IV[]
Xunyu appears in Tower of Lost Souls Ascend mode under the floor, "Uber Airhead", where he uses Astaroth's moveset and is teamed up with Yufeng and Xianghua.