Mafioso
Young Turk
ass
beast
beldam
berserk
berserker
bigot
bitter-ender
bomber
brute
bullethead
demon
devil
diehard
dogmatist
donkey
dragon
fanatic
fiend
fire-eater
firebrand
fury
goon
gorilla
gunsel
hell-raiser
hellcat
hellhound
hellion
holy terror
hood
hoodlum
hothead
hotspur
incendiary
intransigeant
intransigent
killer
last-ditcher
mad dog
madcap
maverick
monster
mugger
mule
perverse fool
pighead
positivist
purist