Here are a few moar.

Synonyms for traitor

conspirator

deserter

hypocrite

impostor

informer

renegade

spy

turncoat

Judas

apostate

backslider

betrayer

deceiver

defector

double-crosser

fink

intriguer

miscreant

quisling

rebel

snake

sneak

snitch

snitcher

squealer

tattletale

traducer

treasonist

two-timer

whistle-blower

wolf

Benedict Arnold

back-stabber

stool pigeon