Because you like Emmett Brown in Back to the Future

Self-described as half-Slytherin, half-Ravenclaw, Molly Davidson has a big, demanding personality that doesn’t always leave space for other people’s emotions. See them in Booksmart.

Bobby Singer is a redneck ghost hunter, but all he wants to do is retire to the junk yards of South Dakota. See them in Supernatural.

Rose Tyler may have not done too well in school, but she's certainly holding her own in space. See them in Doctor Who.

A childlike space cadet, Brittany Pierce has a surprisingly open-minded spirit. See them in Glee.

Tony Montana makes up for his language barrier with his immense skill at cursing as loud and effectively as humanly possible. See them in Scarface.

A man of the court, Lord Varys knows how to manipulate it better than anyone. See them in Game of Thrones.

Intelligent Adele is soft spoken yet brimming with emotion. See them in Blue is the Warmest Color.

Roger is a pansexual alcoholic non-human who will happily lie, cheat and steal to get what he wants. See them in American Dad!.

There is never a dull moment with Jim Moriarty: expect booze and sing alongs in between all of the homicide. See them in Sherlock.

Davos Seaworth is steadfast, intelligent, and trustworthy, which are hard traits to find in a place like Westeros. See them in Game of Thrones.

Dr. Gordon Freeman is a brilliant physicist is a quiet hero. And given all the violent aliens, he better be. See them in Half-Life.

A powerful mob boss, Vito Corleone is always making offers people can't refuse. See them in The Godfather.