From: DeathChicken | #044
Because he was so much fun last time
2) Lord Voldemort (Harry Potter)
...although how did we deal with his Horcruxes last time? He's kinda immortal with those
The Horcruxes are pretty terrible when you think about it, they make him "immortal" but you can still essentially "kill" him because he gets turned into some pathetic ghost thing that needs some crazy esoteric ritual to resurrect that will take years. Characters like that are always fine because if you defeat them and they need half a lifetime to recover from it, you win. Hell, I suggested Lord Foul and he technically (so far at least) can't permanently be destroyed, but it takes a thousand years or more for him to recover from defeat so that's more than good enough for the purposes of this.
Actually
2. Voldemort (Harry Potter)
Might as well, it's easy enough to understand his powers and how he fights/can lose
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Mistake you're making - overlooking the fact that we might not want to be saved.