We (I) waffled back and forth a lot. Bastian, Jareth, Gage, Case, Griffin, Elric, Thosha. Bonus points to anyone who can tell me where each of those names come from! 

I think I've settled on Ender. Yeah, I think that's about right. Little guy jumped on me from the rail when I was coming up the stairs and all I could think was "The enemy's gate is down." so Ender it is. I think.