Is Alexander Human?

[Mechavomit]

The conditions required to hold even human-like evolution patterns in other planets is nearly impossible to be the same as earth's.



You can't have humans from other planets/dimensions because the pattern for evolution is affected by every single detail of a planet's resource and chemical makeup. So no, you can't have humans in other planets. You might have human-esque bipeds that completely function in a different manner.



The odds of a planet having the EXACT SAME evolution patterns as earth are ludicrously low.



So no, Alexander is not a human if he's from another planet/dimension, which he seems to be.

You're saying this as if other dimensions are a scientific fact. Amnesia is already filled with imagined non-existing stuff, so I think it's save to assume that there could be a race of humanoids very closely resembling humans. Like the Time Lords, as mentioned before.

Also I remember reading about this on TVtropes and people there think he's Nergal. So there is something to think about...