User blog comment:Vremyanova/Speculated Future Servant, Short Introduction, and Their Possible Class/@comment-27247829-20160129154259

Xuanzang? Now that's interesting; there was a Chinese knock-off mobile game with Nasuverse characters and terminology, featuring lots of original servants, most of them Chinese heroes. Two of them were Wukong and Xuanzang. The rest are your usual 3 Kingdoms figures, like Guan Yu and Cao Cao.

That game puts Wukong as a Berserker and Xuanzang as Caster. Personally though, I thought Xuanzang's selfless personality (though he does shows a moment of selfishness from time to time) would qualify him as Ruler.