Because you like Nezuko Kamado in Demon Slayer

Patrick's time as a fake psychic made him a master manipulator. But he now seeks to only use his talent for good. See them in The Mentalist.

A formerly righteous wizard, Saruman has been corrupted by the forces of evil. See them in The Lord of the Rings.

David Rose likes his rose chilled, his linens pressed, and his family quiet. See them in Schitt's Creek.

Joe West is overprotective and secretive when his children are involved. See them in DC Extended Universe.

Marlin navigates through shark-infested waters, angry anglerfish, a jellyfish bloom and hungry whales to search for his son. See them in Finding Nemo.

Remy Hadley is a closed book—a cynical, super-smart closed book. See them in House M.D..

Wei Shen is an undercover cop on a mission for justice (or at least vengeance). See them in Sleeping Dogs.

Buddy Pine is an unhinged superfan of superheroes using technology to take down his idols. See them in The Incredibles.

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.

Kilgrave is a domineering, abusive boyfriend. Then, add in the power of mind control. See them in Marvel Cinematic Universe.

M. Bison is a diabolical megalomaniac hell-bent on dominating the world. See them in Street Fighter.