Tzitzimitls as a whole offer neither affirmation nor denial for these claims, and in fact seem to glory in such legends. Certainly, the arrival of a tzitzimitl upon a world heralds the advent of a time of great trouble, although whether or not the tzitzimitl actually presages such dark times or is the cause of them is a matter of debate. On some planets, tzitzimitls have already arrived, yet they lie dormant in ancient tombs, imprisoned ages ago by heroes who are long forgotten today.