Because you like Marion Ravenwood in Raiders of the Lost Ark
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.
Vash might act like a carefree, peace-loving goof, but it's not wise to underestimate this "Humanoid Typhoon." See them in Trigun.
The witty Aku would be an ideal dinner guest, if he weren't a demon. See them in Samurai Jack.
The Ice King is lonely and looking for a princess to sweep him off his feet. See them in Adventure Time.
Good fashion? Check. Snarky quips? Check. Supernatural evil-fighting powers? Also check. See them in Buffy the Vampire Slayer.
Taking down villains, standing up to sexism, and pulling off a bright-red lipstick are all in a day's work for Agent Peggy Carter. See them in Marvel Cinematic Universe.
Betty Cooper seems like a sweet girl, but she also has a dark side and can go beyond what's safe or sane. See them in Archie Comics.
Newt Scamander is more comfortable with animals than people, even if the animals are super-dangerous magical creatures. See them in Fantastic Beasts and Where To Find Them.
April Ludgate doesn't like sunshine. She's more of a blood and guts kinda girl. See them in Parks and Recreation.
Wei Shen is an undercover cop on a mission for justice (or at least vengeance). See them in Sleeping Dogs.