Thank you!
I didn't invest much time in creating a lore, but you made me write a head canon:
This character, "the Antimage" wants to stop an organization of evil wizards that have the monopoly of the magic and use it for evil things, like... building parking lots. So, they had to learn to absorb the magic and use it against them.
His primal objective is to close all the portals from where the magic flows to the world.
I picked the music from incompetech.com, it was made by Kevin MacLeod.