What is Vashaun?

[Alleluia]

I wonder if this is the same child body from back when he first had it made?

Its a simulacrum, so it may not experience any normal biological function, including aging. Would explain why he felt the need to remove it from the public eye every couple years. Kind of a Highlander situation. After about 5 years of use he recalls the body and gives excuses to those that know him, then lays low for a year or so, the body gets a makeover with an aesthetician, and then the satrap suddenly has a new favored page running around again to replace the old one.

[MoofiaBossVal]

I wonder if this is the same child body from back when he first had it made?

During the Final Days in Thavnair, Vytra had Varshan reverted back into the eye and placed back in his (Vytra's) head. He has both of his eyes in the Thavnair dungeon. After the situation in Thavnair calms down, he removed his eye and had the alchemists reshape it back into Varshan, who he sent to Sharlayan to check up on the status of his people. Earlier on in Endwalker's story, the alchemists reveal that they had suspected that Varshan was connected to the dragon of Thavnair, because they reshaped a dragon eye into the simulacrum. So Vytra has probably been taking his eye in and out and has had his eye shaped into a simulacrum many, many times. The Varshan we see might be his preferred appearance, but is not the same simulacrum that he sent through the gate 5,000 years ago.