 Throughout "Cold Days", the Redcap appears with his entourage to harass Harry and make several attempts to kill him.It's revealed he is the father of Ace, a changeling first appearing in "Summer Knight", and cares little for his mortal offspring, deeming him a failure.The Redcap survives the final battle in "Cold Days", but loses an eye when Harry slashes his face with claws of Winter Ice.