dark matter (kirby)
A recurring boss and villain in the Kirby series who posesses others, most notably King Dedede. It is one of the ultimate villains of the series and the second one to appear after Nightmare.
Its motives are unclear, but there are theories that Dark Matter lived a lonely existence in the galaxy and decided, "If I cannot be happy, no one can." So it made several attempts to dominate the universe by spreading its dark influence in the form of dark clouds all over planets that take control of the minds of whoever they possess.
Dark Matter is controlled by Zero, the second resident universal dominator and ultimate evil in Kirby's universe after Nightmare.