That was amusing. I'm a fan of his contrary personality and I think you succeeded in making him slightly non-gary stu-ish. I'm also a fan of how it reads like a D&D character profile (lol).

Instead of asking you to write Aerth's story, how about the story of the one who made him up? It would be interesting, for me anyway.

That said, commas are your friends, even in an informal piece like this. Sometimes you have run-ons. Read the piece aloud and you'll spot them right away. One thing that stuck out in particular: "His too-perfect features worthy of a High Elf seems" It should read: "His too-perfect features, worthy of a High Elf, seem"

All in all, pretty good.