Like the figures found in ancient grottoes; grottolike; wildly or strangely formed; whimsical; extravagant; of irregular forms and proportions; fantastic; ludicrous; antic.(adjective)
source: webster1913
noun (n)
art characterized by an incongruous mixture of parts of humans and animals interwoven with plants(noun.artifact)
source: wordnet30
A whimsical figure, or scene, such as is found in old crypts and grottoes.(noun)
source: webster1913
adjective satellite (s)
distorted and unnatural in shape or size; abnormal and hideous(adj.all)
Example: Tales of grotesque serpents eight fathoms long that churned the seas.