baddy (baddies plural ), baddie A baddy is a person in a story or film who is considered to be evil or wicked, or who is fighting on the wrong side. You can also refer to the baddies in a situation in real life.
(BRIT)
INFORMAL n-count usu pl
(=bad guy) (Antonym: goody)
...a baddie who's trying to take over the world.
in AM, usually use bad guy