Because you like Egon Spengler in Ghostbusters

Turanga Leela is the daughter of two mutants who live in the sewers below New York City. See them in Futurama.

Playing his cards close to his vest, J. Daniel Atlas believes the closer you look, the less you see. See them in Now You See Me.

Lucius Malfoy is a judgmental social climber who has a bigoted superiority complex. See them in Harry Potter Series.

Moe Szyslak is the crabby owner of the grimiest bar in Springfield. See them in The Simpsons.

A brilliant graduate student in Italy for "research," Oliver has other things on his mind: flirting, swimming, and dancing. See them in Call Me by Your Name.

Leonard Hofstadter is the normal one among his scientist friends, though in fairness that's a low bar. See them in The Big Bang Theory.

Maurice Moss is a dedicated IT guy who even talks like a computer. See them in The IT Crowd.

Tina Cohen-Chang is a shy loner who becomes a fierce performer on stage. See them in Glee.

The only constant in Night Vale is Cecil's hypnotic voice. See them in Welcome to Night Vale.

Jack Skellington is a nightmare-man with a soft heart and smooth voice. See them in The Nightmare Before Christmas.

T'Challa is a regal superhero with the weight of the world (and particularly his nation) on his shoulders. See them in Marvel Cinematic Universe.