Well, Sun Wukong could be a multitude of classes, from lancer with his magic staff, rider with the cloud and caster with all his magical powers, among others I assume, but this one? No idea. I mean, Goke has the cloud and staff, but by now we remember him more as a SS than any link he has with his child self.
Buhzakah, Avenjah, I don't understand any o' that!Gokuu, I wonder what class you are.It's Berserker, isn't it?Although he isn't a Servant in the first place...Nah, maybe Avenger...