The Collaborative International Dictionary of English v.0.48:

Caricaturist \Car"i*ca*tu`rist\, n.
   One who caricatures.
   [1913 Webster]

WordNet (r) 3.0 (2006):

caricaturist
    n 1: someone who parodies in an exaggerated manner

Moby Thesaurus II by Grady Ward, 1.0:

39 Moby Thesaurus words for "caricaturist":
   architectural draftsman, banana, burlesquer, cartoonist, clown,
   comedian, comic, crayonist, cutup, delineator, draftsman, drawer,
   epigrammatist, funnyman, gag writer, gagman, gagster, humorist,
   ironist, jester, joker, jokesmith, jokester, lampooner, madcap,
   parodist, pastelist, prankster, punner, punster, quipster,
   reparteeist, satirist, wag, wagwit, wisecracker, wit, witling,
   zany