Chris Metzen renamed Rudolph the reindeer after himself so we can celebrate him every Christmas.
Chris Metzen had a literal statue built of him that he accepted that is placed in the lobby of Blizzard Headquarters in Irvine that is not modest in ANY way and instead is modeled after Walt Disney's statue where instead of Disney holding the hand of Mickey Mouse, he is holding the hand of Winston from Overwatch.
Metzen's self-chosen self-insert, Thrall, comes back as green Jesus again ready to save the horde and all of Azeroth from the war and from Sylvanas.
So let's review Chris Metzen:
1. He thinks highly of himself, inserting himself into holidays and getting statues built of him like a god.
2. Has a savior complex.
Who does this remind you of? Azshara. Azshara has statues of herself everywhere, she thinks she's god's gift to her people. She is her people's savior.
You could make a case that Azshara represents Chris Metzen's true nature. Its his true self-insert into WoW. Just not the one he intended.