The main thing we see of Nestor is his calm and pious side. But above all, he is very loyal to his superiors and his principles, making him a war machine who still thinks before acting.

He was found underground in 19██ in transparent quartz. He is one of the very rare Altered to have appeared outside the spawn range. He was studied as a fossil before realizing he had a pulse and was therefore remove from this stone.

The H.E remains very skeptical about his backstory before being buried underground: implying stories of last man on earth, God, and the reformation of Earth. That's why he is pious.

He's one of the member of the "Average russian team" (ART)

Nestor's affinities with the other:
With Boris : Best Friend. Protect him at all costs, enjoys his company and spend time with him.
With Harrys : Best Friend. Likes to tease him and spend time with him.
With "The conclusion." : Friend. Respect him.
With Mary : Hate each other. Finds her hard, weird, unbearable and hates her values.
With Bennoît : Acquaintance. Finds him profoundly good.
With Seth : Acquaintance. Finds him vulgar.