Because you like Dr. Gordon Freeman in Half-Life
Alex Danvers is a brilliant engineer tasked with alien threats, and one of those aliens is her adopted sister Supergirl. See them in Supergirl.
A dedicated hedonist, Jack Harkness appreciates raunchy stories, stiff drinks, and excellent bottoms. See them in Doctor Who.
Randy Marsh is a geologist and Nobel Prize winner who is into binge drinking, starting riots, the Food Network, and P.F. Changs. See them in South Park.
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.
Xander Harris' life motto: laugh in the face of danger and then hide until it goes away. See them in Buffy the Vampire Slayer.
Galina Reznikov is the head chef of prison, cooking up meals as well as storms on anyone who dares to cross her; even the guards are terrified of her. See them in Orange Is The New Black.
A passionate paleontologist with interests no one seems to share, Ross Geller tries to find love despite his past of abandonment and an awkward personality. See them in Friends.
Miss Peregrine exists to protect her wards, whether they like it or not. See them in Miss Peregrine's Home for Peculiar Children .
Convinced that the world is conspiring against him, Tatsuhiro's reconciled himself to his fate as a shut-in. See them in Welcome to the NHK.
Joey Potter is a low-key girl next door in love with her best friend. See them in Dawson's Creek.
Smart but insecure, Tally Youngblood is torn between what she wants and what her society demands. See them in Uglies.