De or het zaadmonster?

The correct Dutch article is:

de zaadmonster

How to use zaadmonster

the zaadmonsterde zaadmonster
this zaadmonsterdeze zaadmonster
that zaadmonsterdie zaadmonster
our zaadmonsteronze zaadmonster
your zaadmonsterjouw zaadmonster
every zaadmonsterelke zaadmonster
which zaadmonster?welke zaadmonster?
a big zaadmonster / the big zaadmonstereen grote zaadmonster, de grote zaadmonster