baddies, beasts, brutes, caitiffs, devils, evildoers, fiends, heavies, hounds, knaves, meanies, miscreants, monsters, nazis, no-goods, rapscallions, rascals, reprobates, rogues, savages, scalawags(or scallywags), scamps, scapegraces, varlets, villains, wretches

villainessesblackguardscriminals, crooks, culprits, felons, lawbreakers, malefactors, offenders, perpetrators, perps, transgressorssinners, trespassers, wrongdoerscads, heels, serpents, snakes, vipersbandits, bravos(or bravoes), desperadoes(or desperados), outlawscons, convicts, jailbirdsassassins, cutthroats, gangsters, goons, gunmen, hoodlums, hooligans, racketeers, ruffians, thugsroughs, rowdies, toughslosers, lowlifes(also lowlives), ne'er-do-wells, stinkers, trash