Bluebeard
Cain
Mafioso
Young Turk
also
apache
assassin
assassinator
bactericide
beast
beldam
berserk
berserker
bloodletter
bloodshedder
bomber
bravo
brute
bucko
bully
bullyboy
burker
butcher
button man
cannibal
cutthroat
daisy
decapitator
deicide
demon
desperado
devil
dilly
dragon
drawcansir
eradicator
executioner
exterminator
fiend
fire-eater
firebrand
fungicide
fury
garroter
giganticide
goon
gorilla
killer whale
causal agency
causal agent
cause
difficulty
dolphin
bastard
cop
criminal
fighter
hunter
liar
monster
murder
murderer
offender
pirate
predator
rapist
spy
thug
vampire
villain
warrior
Miller
Schiller
biller
chiller
distiller
driller
filler
giller
hiller
miller
pillar
piller
schiller
siller
spiller
stiller
thriller
tiller
willer