Because you like Sandy Cheeks in SpongeBob SquarePants
Whatever Sakura Haruno lacks in power, she makes up for in intelligence and bravery. See them in Naruto.
Kathy is a natural caretaker who strives to find hope in even the darkest of times. See them in Never Let Me Go.
Frodo might have carried the ring, but Samwise Gamgee carried the ring bearer. See them in The Lord of the Rings.
Driven, resentful, and ruthless, Mello is an emotional powder keg. It's only a matter of time before he explodes. See them in Death Note.
Although Borat has a curious mind, he has no filter, and some very out of date views on just about everything. See them in Borat: Cultural Learnings of America for Make Benefit Glorious Nation of Kazakhstan.
With her consciousness so easily shifted between bodies, Motoko Kusanagi is left unsure of who or what she really is. See them in Ghost in the Shell.
Maurice Moss is a dedicated IT guy who even talks like a computer. See them in The IT Crowd.
Love Quinn is a trained chef and excellent girlfriend, but she's hiding something dark. And bloody. See them in You.
Riley Blue is trying to outrun her bad luck, but she might not be fast enough. See them in Sense8.
For the sake of science, Kurisu Makise will persevere no matter how deep into the dark secrets of the world she finds herself. See them in Steins;Gate.
Hughie Campbell didn't ask to be a hero, but he's tired of injustice. See them in The Boys.
The last war left his economy devastated, and now Germany is engaged in another war and stuck with two barely trained allies for help. See them in Axis Powers Hetalia.