Fitz

Fitz is an orphaned young man that assisted Harry Dresden while he was a spirit in Ghost Story.

Biography
Fitz has the rare ability to hear (but not see) Ghosts like Harry was in Ghost Story. Because of this Harry enlists his help in finding his murderer, and also helps Fitz escape the small gang he is caught up in.

Fitz is described as "youthfully scrawny, his skin bronze enough to look Native American, though his tangled red hair and pug nose argued otherwise. His eyes were an odd shade of brown, so light as to be nearly golden."

It has been noted that this odd combination of attributes, as well as a name that means bastard, imply that he could be the son of Tera West and Harley MacFinn