(n.) One who disobeys the law; a criminal.

Judas bad person betrayer convict criminal crook deceiver delinquent desperado desperate criminal double-dealer evildoer felon fugitive gallows bird gangster gaolbird jailbird malefactor malevolent malfeasant malfeasor misfeasor mobster offender outlaw public enemy quisling racketeer scofflaw sinner swindler thief thug traitor transgressor two-timer villain worker of ill wrongdoer