Talk:Twilight's Kingdom - Part 2/@comment-24676772-20140508205221/@comment-26973802-20140509011314

Then he sends them to Tartarus where the other monsters (possibly Grogar, Lavan, Smooze, and the other G1 villains) tear them apart.

And all this is assuming Rock Father's summary is true - if it's fake I expect the princesses to make it out of Tartarus once Tirek is defeated.