Urixo Raazgul, from one of this troper's stories. He gleefully slaughtered an entire dimension of people, all for exploiting the fact he had been gullible enough to have bought a "box of powerful magic" and that it was fake. He is planning to do this on a parallel earth. No reason is ever given.

Now add Carosso Rusathi, except he is more Kill All Humans. A straighter example would be Andrew Redrain, an Expy of Legato Bluesummers, who really, really dislikes regular humans only a little more than the superpowered people. Have you ever wondered how a telekinetic could kill someone? Brr...

The BigBad of this troper's story is this. He represents the sin "Sloth", and plans to destroy all of reality with a single simple action that leads to a series of events that he plans will either destroy the universe or kill him (which, as he is immortal and invunerable, requires much more effort than you would think). Why? Because he ''can't be bothered to continue existing''.

The ultimate BigBad of mine is Nihilus (no relation to the sith lord), who is essentially every single self-destructive force in existence merged into one, and given form. He wants to destroy all of reality itself because he sees existence as pointless. He will very rarely show himself, if at all, but when he does... his human form may not be too bad, but his true self is every single horror imaginable all meld into one ungodly phenomenal horror. He hates Mary Sues and Marty Stus, especially the beyond-overpowered ones, far more than ''everything else in existence'' because of their stubborn refusal to stay dead.

Thank God, these are all fictional characters. I was scared when I saw a TroperTales link. Put down your Reality Bomb control switch and go back to OmnicidalManiac...