Form of generic evil person (spoilers)
Here's a thought, why was Exdeath in the form of a suit of armor?
He bears a very similar appearance to FFIV spoilerGolbez, being a blue suit of armor. But with the person in the spoiler tags, he had eyes within the helmet, as though someone was inside. Exdeath did not however, as though the armor was his actual body.
I'm curious if this was his 'true' form, or whether his true form was a tree. The final battle with Exdeath showed the armor on the top of a demented tree type thing, so I'm wondering if this tree type thing is what is 'inside' the armor.