Edward Trenton

Edward Trenton was the father of Cole Trenton, and was a monster of unknown species.

Background
In 2003, Dean was working on a case that involved a monster that fed specifically on liver. Dean eventually managed to track down Edward and slit his throat, but not before Edward called on his son, Cole, for help. Edward's death would eventually send Cole on a mission to avenge his father and to track down Dean for revenge.

Several years after, when Cole confronted Dean in an alley fight, Dean said he has never seen any monster like Edward before and had never seen anything like him yet.

Appearances

 * Season 10