Because you like The Stranger in A Fistful of Dollars
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.
Kesuke Miyagi is a karate expert who thinks the best way a scrawny high schooler can learn how to defend himself is by washing every surface in sight. See them in The Karate Kid.
An undercover DEA agent, Max Payne is too focused on avenging the past to plan for the future. See them in Max Payne.
Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.
Count Olaf is a traveling actor, except he can't act and his homicidal tendencies make finding work pretty difficult. See them in Lemony Snicket's A Series of Unfortunate Events.
His name is Chucky, and he's your friend till the end. Hidey-ho! See them in Child's Play.
A meticulous forensic scientist, Edward Nygma is insanely good at his job. Emphasis on the "insane" part. See them in Gotham.
Keeping your cool is just as useful in the underworld as in war, and Michael Corleone is stone-cold. See them in The Godfather.
Blunt, petty, neurotic, Larry David can never live and let live. See them in Curb Your Enthusiasm.
Vash might act like a carefree, peace-loving goof, but it's not wise to underestimate this "Humanoid Typhoon." See them in Trigun.