 Mab has a strong interest in Harry, and has on numerous occasions throughout the series offered him the title and position of the 'Winter Knight', her personal champion.Despite the great power of the position, Harry has always refused as being Winter Knight would make him bound to her every command, a slave to Mab for the remainder of his mortal life.However, in "Changes," Harry finally accepts Mab's offer to become Winter Knight, in exchange for healing and power enough to save his daughter.