imitator
noun
[ ˈɪmɪteɪtə ]
• someone who copies the behaviour or actions of another.
• "the show's success has sparked off many imitators"
Similar:
copier,
copyist,
emulator,
follower,
mimic,
plagiarist,
ape,
parrot,
echo,
copycat,
epigone,
impersonator,
impressionist,
mimicker,
parodist,
caricaturist,
lampooner,
lampoonist,