ugly customer (?.)
- Mafioso
- Tartar
- Young Turk
- bear
- beast
- beldam
- berserk
- berserker
- bomber
- bruiser
- brute
- crank
- crosspatch
- demon
- devil
- dragon
- feist
- fiend
- fire-eater
- firebrand
- fury
- goon
- gorilla
- grizzly bear
- grouch
- gun
- gunsel
- hardnose
- hatchet man
- hell-raiser
- hellcat
- hellhound
- hellion
- holy terror
- hood
- hoodlum
- hooligan
- hothead
- hotspur
- incendiary
- killer
- mad dog
- madcap
- monster
- mug
- mugger
- muscle man
- plug-ugly
- rapist
- revolutionary
- rodman
- roughneck
- savage
- she-wolf
- sorehead
- spitfire
- strong-arm man
- termagant
- terror
- terrorist
- tiger
- tigress
- torpedo
- tough
- tough guy
- trigger man
- violent
- virago
- vixen
- wild beast
- witch
- wolf
