Alexander

[Alberel]

But I thought he would be much bigger though disappointed with that aspect to!

The screenshots we have of him so far show him to be the size of a mountain so I'm not sure how big you were expecting him to be...

With regards to the OP though, remember that Ramuh wasn't a 'bad' primal either. We fought Ramuh because he wanted to test us. There's also the issue of the primals consuming aether at a dangerous rate which requires them to be put down. There's also Shiva, which is an entirely different situation. There are loads of ways Alexander can be introduced that don't make him an enemy but still needs us to fight him.

[Kotemon]

The screenshots we have of him so far show him to be the size of a mountain so I'm not sure how big you were expecting him to be...

There are loads of ways Alexander can be introduced that don't make him an enemy but still needs us to fight him.

I'm going to hedge a theory on a FFXI approach.. The goblins found the thing, rebuilt and restored it. Having no way to power it with crystals alone. The Illuminati used data of primal summoning as a way to gather or channel its energy into the construct. Once its powered it's any ones guess as to when or if it'll be come uncontrollable. But in the meantime for some reason they continue to build on top of it making it even bigger all the while being powered by tapping the source where primals come from.. Then the Goblins and Illuminati in it start acting weird.

[WellFooled]

that Ramuh wasn't a 'bad' primal either.

I'll believe Ramuh isn't a bad primal when a reasonable explanation is given to why he tempered (stole the free will from) almost an entire species of peaceful people.