pasticheur

[ pas-tee-shœr ]
/ pas tiˈʃœr /

noun, plural pas·ti·cheurs [pas-tee-shœr] /pas tiˈʃœr/. French.

a person who makes, composes, or concocts a pastiche.
a person who imitates the work of others.

British Dictionary definitions for pasticheur

pasticheur
/ (ˌpæstiːˈʃɜː) /

noun

a person who creates or performs pastiches