Because you like Agent Smith in The Matrix
Wanderer is a Soul, a parasite sent into a host to take over their body, extracting information from them and colonizing their species. See them in The Host.
Woody is a selfless leader of Andy's toys who likes change less than a snake in his boots. See them in Toy Story.
Foul mouthed and disturbingly comfortable with violence, Hit-Girl is a precocious assassin who doesn't need anyone's protection. See them in Kick-Ass.
Knuckles the Echidna is a 16-year-old red echidna (aka a spiny anteater) and guardian of the ancient Master Emerald. See them in Sonic the Hedgehog.
Louise Belcher might be just a kid, but she can manipulate just about anyone with a pulse. All in the name of fun, of course. See them in Bob's Burgers.
If you died and came back to life, and then died more times and came back, you might stop battling evil mutants. Not Jean Grey. See them in X-Men Series.
Imperator Furiosa is a badass patriarchy toppler. She'll do anything to secure a better, freer future for the women she cares for. See them in Mad Max: Fury Road.
A great galactic bounty hunter, Samus Aran is not as good at expressing emotions. See them in Metroid.
Garnet is a Crystal Gem who'll protect her friends with her life. See them in Steven Universe.
Don't underestimate Maggie Greene. She's a farm girl with a mission. See them in The Walking Dead.