De or het rockartiest?

The correct Dutch article is:

de rockartiest

How to use rockartiest

the rockartiestde rockartiest
this rockartiestdeze rockartiest
that rockartiestdie rockartiest
our rockartiestonze rockartiest
your rockartiestjouw rockartiest
every rockartiestelke rockartiest
which rockartiest?welke rockartiest?
a big rockartiest / the big rockartiesteen grote rockartiest, de grote rockartiest