(n.) A servile or hypocritical flatterer.

adulator apple-polisher ass-licker backscratcher blarneyer bootlick bootlicker brown-nose brownie cajoler clawback courtier creature cringer dupe fawner flatterer flunky footlicker groveler handshaker helot instrument jackal kowtower lackey led captain lickspit lickspittle mealymouth minion peon puppet serf slave spaniel stooge suck sycophant timeserver toad toady tool truckler tufthunter wheedler yes-man