Yukimura

Yukimura
Real name	Unknown
Gender	Unknown
Status	Unknown
Location	Unknown
Affiliation	Unknown
ARG appearances	Mystery of the Emblem
First appearance	2016-03-26

Yukimura, also known as the Mystery or ? ? ?, is the mysterious controller of the Archanea world. Very little is known about them.

Mystery of the Emblem

/u/mysteryoftheemblem

The /u/mysteryoftheemblem reddit account that originally posted the ARG's trailhead has a flair for the Fire Emblem Fates character Yukimura, whose class is Mechanist, also known as "Puppetmaster".

In the log

A character named only as "? ? ?" appears a few times in the log, usually to comment on one of the character's deaths or the introduction of a new character. One of the txt files found during the ARG also mentions its author being a "Mechanist". It is implied that Yukimura has some form of control over the Archanea world, but the extent of this is unknown.

The ARG's real creator confirmed that they are all the same character in the post-ARG AMA:

The Mystery, also known as ? ? ? or Yukimura, is the mysterious puppetmaster that kept appearing. They're not supposed to strictly represent me, though. They're the manipulating force that sets everything up, although their motives are unknown.

Yukimura has also been confirmed to appear in the ARG's sequel.