Because you like Warden Walker in Holes

A daring conman, Flynn Rider is so charismatic that you might not mind when he steals from you. See them in Tangled.

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.

Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.

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