In a quick interlude piece to sate your Doctor E desires, Chuck Wendig wrote a piece on a quick design for your character(s): http://terribleminds.com/ramble/2013/10/28/plot-and-character/ and I thought it might be amusing to use it to characterize E for you.  Feel free to disagree and offer alternatives!

LOGLINE: Doctor E is a single, white, jobless, practitioner of magic trying to keep the world safe from creatures who come from beyond its reality.

PROBLEM: E knows enough to be dangerous, not enough to be effective, and he’s almost drawn like an addict to the conflicts.

SOLUTION: E’s solution is to minimize his role so as not to gain the attention of presumably petulant powers.

THE CONFLICT BETWEEN: E has either killed or severely injured a Dragon, and has thus thrust himself into the spotlight.

LIMITATION: E’s largest limitation is his fear of commitment; he characterizes it as not wanting to be a wizard, but it’s really that he doesn’t want to give up his normality.

COMPLICATIONS: E’s in the middle of a magical war for which he needs to pick sides.

GREATEST FEAR: That E is powerful enough to be noticed, but not powerful enough to affect his or the world’s destiny.

DESCRIPTION: Cute, not handsome. Green eyes, could use exercise, and if he wore glasses he’d be indistinguishable from just about every movie nerd ever.