|Kana||マスター・シエン (Masutā Shien)|
|Home World||Land of Departure|
|Weapon||Keyblade (Light of the Masters)|
Xien bears a striking resemblance to Master Eraqus, albeit appearing older and with grey hair minus the short high ponytail. He wears a black, red lined haori over top a black shirt and grey criss-crossing straps, along with a long grey hakama and silver and black pointed boots.
Master Xien is a hospitable man, welcoming Flintlass and Nathaniel into the Land of Departure with open arms. He is stern and willing to instruct, a trait he shares with his son. He believes light is absolute and darkness can always be conquered.
Xien, as a Keyblade Master, is quite skilled with his weapon. He can use his element, Light, to a great extent, in conjunction with a series of long ranged and close quarter attacks.
- Main article: Master Keeper
Xien's Keyblade is the same one wielded by his grandson many years later. It is passed on to him after his death.
- Xien's name is an anagram of Enix, the second name of the series's developer, much like Eraqus is an anagram of Square and Yen Sid is Disney spelt backwards.