Michael Myers has supernatural abilities so I don't think John Wick would be able to beat him, considering Myers is immune to gunshots, acids, and large explosives. Joker could beat John Wick with planning, and Afton might win if he was Springtrap because Springtrap can only be killed with extreme heat, so if John had prep time then he would win but if he didn't then he might be overpowered by Springtrap's metal body. The other three characters would lose.