This page describes Hwang's Battle Style in each of the games in which he appeared.
Soul Blade[]
In Soul Blade, Hwang's fighting style is a lot like Mitsurugi. The exceptions are his throws and kicks.
Soulcalibur[]
In Soulcalibur, Hwang's style is a lot like Xianghua. Again the exceptions are the kicks and throws, along with some sword moves, his stance, & he wields Blue Thunder instead of Krita-Yuga.
Soulcalibur II[]
Hwang is not present in Soulcalibur II, but a style similar to his is used by Assassin.
Soulcalibur III[]
In Soulcalibur III, Hwang finally has his own moveset, but he shares it with custom characters. It is somewhat stronger and more useful than Yun-seong's style.
Soulcalibur III: Arcade Edition[]
same as SCIII
Soulcalibur: Broken Destiny[]
He appears as an NPC in the Quick Match Mode using Yun-seong's style.
Soulcalibur V[]
He appears as an NPC in the Quick Battle Mode using Devil Jin's style.