Because you like Stanford Blatch in Sex and the City

Hell hath no fury like an evil fairy scorned. See them in Maleficent.

His murderous megalomania aside, Loki is quite charming. Just don't mention his strapping older brother; he's a tad jealous. See them in Marvel Cinematic Universe.

A wildly brilliant detective, Sherlock Holmes can figure out everything except how to interact with other human beings. See them in Sherlock.