Benedict Arnold
Brutus
Judas
Judas Iscariot
Machiavellian
Quisling
archtraitor
betrayer
calculator
cockatrice
coconspirator
conniver
conspirator
conspirer
counterplotter
double agent
double-crosser
double-dealer
exploiter
finagler
informer
intrigant
intriguer
machinator
maneuverer
manipulator
operator
opportunist
plotter
projector
quisling
rat
serpent
snake
strategist
tactician
timeserver
traitor
treasonist
trimmer
turncoat
wire-puller
contriver
deviser
planner
angler
politician
adventurer
blackmailer
businessman
charlatan
demagogue
diplomatist
gambler
hypocrite
impostor
interloper
liar
scoundrel
seducer
speculator
stratagem
swindler
trickster
usurer
usurper
villain
beamer
beemer
creamer
deemer
dreamer
femur
leamer
lemur
reamer
screamer
steamer
streamer
teamer