So, I have a 10th. Let's not discuss my whole 'THIS IS NOT MEANT TO BE A GOAL' thing, mostly because I also have an 11th character incoming. ANYWAY, ignoring my complete lack of self control, here we go:
The lucky number 10 is Julian Blackthorn, of The Shadowhunter Chronicles. He's 17, a Shadowhunter, would-be father to all of his younger siblings (none of whom are here, unfortunately), and parabatai to Emma Carstairs (shortsword).
Given that his PB doesn't have runes, please do just assume that he's got all those shiny black runes on his skin like the rest. His canon point is three pages from the end of the latest book, Lord of Shadows. So UNFORTUNATELY, he knows a lot of shit that the rest of his fellow Shadowhunters do not (sorry Izzy, Jace, Alec). He'll also really want to kill Sebastian, sorry Ashley! >.>
OH, AND - he'll be arriving in a bad way, like injured bad way. :D