Where To Find: Whiterun, Must Complete the Quest "Glory of the Dead"
Specialization: Archery
You will first encounter Aela outside Whiterun's city walls fighting alongside her shield-brothers against a renegade Giant. Even though I helped out in the battle, she proceeded to thank me for nothing and rudely brush me off. Little did she know I would soon be her shield-brother and she would be serving me, the Dragonborn.
She's lucky she's good in a fight, because I was about to tell her to wait in a dark, damp crypt and never come back. She also has some awesome side-boob action going on. Don't pretend you haven't been looking.
Not to mention, SPOILER ALERT, she's a wicked sweet werewolf, and not the lame, shirtless Taylor Lautner kind. Although, shirtless would work in this case.