Because you like Marlo Stanfield in The Wire

Brilliant, violent, and only a little insane, the Joker doesn't listen to anyone except the voices in his head. See them in DC Extended Universe.

Barry Allen is a nerd, forensics expert‚ and superhero with supersonic speed who is determined to solve his mother's murder. See them in DC Extended Universe.

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.