Boston : He's an Irishman from south Boston. That means he grew up poor and Catholic, really. Even though he's Fae now, he still clings a bit to his Catholic roots. He's melded it into his belief system decently well. And yes, he has the accent. 'I pahked the cah in Havahd Yahd.' No, I will not put it in all my dialogue, don't worry.
Wilder : He went through his Chrysalis at fifteen, and he spent a good few years focusing almost entirely on his Knightly duties, to the detriment of the real world.
Scathach : He belongs to the House Scathach, and he's one of the members who only recently escaped from Arcadia.
Knight : He's an honorable, passionate Knight. He defends the weak and fights evil.
College : Due to his dedication to his Knighthood, he ignored the mortal realm for far too long. That is why he's a twenty one year old college freshman. But hey, at least he can buy beer for his new friends! He's on a track scholarship.
Athlete : He loves working out, whether running, swimming, hiking, climbing, whatever.
