1) Breaker of rules 2) Criminal 3) Crook 4) Felon 5) Fictional clown 6) Fictional henchman 7) Fictional serial killer 8) Law offender 9) Lawbreaker 10) Malefactor 11) One who parks by a hydrant 12) Outlaw 13) Rule breaker 14) Someone who violates the law 15) Sports management company 16) Talent and literary agency Found on https://www.crosswordclues.com/clue/violator