Originally Posted by Demon of Humanity
as for having power over him with the name not really that applies to deamons/entities not living humans like the emperor well when he was full flesh and blood and not stuck in glorified life support system.
and Prospero Burns
, Ahriman: Exile
also supports the idea that is doesn't just wholly apply to daemons/warp entities:
Though, as Over Two Metres Tall
said, the warp is certainly involved.
I am convinced that the main reason the Emperor is known only as "The Emperor" is because enemies being aware of his true name would be a massive chink in his armour.
Originally Posted by Malus Darkblade
Where have we seen the Emperor showcase his 'superiority' over those who served him?
Just because he's the most powerful entity in the Imperium doesn't automatically make him have said complex.
To me he's essentially Superman but with no qualms about killing millions if not billions for the greater good.
If the Emperor had a human psyche, or something at least relatable, I would argue he had a form of god-complex. As a mortal, you can't wield that sheer amount of power and not have an "unshakable belief characterized by consistently inflated feelings of personal ability, privilege, or infallibility" (definition according to wikipedia).
There is evidence which can be used to argue this point, such as his treatment of the Primarchs or his disbelief at Horus' betrayal. But, of course, others can just as justifiably have an alternative viewpoint.