AmDrag in the downworld

Summary: Jake Long is friends with Simon and Clary, before they get introduced to the downworld. Jake is the same age as Clary and the others and his family has mostly passed away. (maybe I'll use some characters from american dragon like Fuu dog.) He, being a dragon is the protector of the downworld and knows about it for a long time. Pairing: Jake x Izzy most likely, small chance