GenocideHeart said:
My point is that there's people a zillion times worse than the Joker out there [...]
Um, no, there's not. Really. The Joker's soul once made the
Spectre feel nauseous looking at it, and this is an entity who embodies the Wrath of God and is so monstrously jaded and disassociated that it stares into the most disgusting elements of Hell, demonkind, and the mystic realms without blinking.
In "World War III" (during Grant Morrison's JLA run), J'onn J'onnz no-sold the psychic despair aura of Mageddon, which had previously made entire planets full of gods (
literal gods, mind you, Kirby-esque cosmic space gods even) go insane and kill themselves. I mean, he flat-out bounced it, and also shielded other minds from it simultaneously. In "Rock of Ages" (also during Grant Morrison's JLA run), J'onn tried to telepathically force the Joker's mind back to sanity. And giving it everything he had, he could still only hold it for
a few minutes, and the effort involved
knocked him staggering. I am not making this up. We have on-panel evidence that WTF is wrong in there, its harder on the psyche than effing
Mageddon... if you're crazy enough to telepathically plug into it (as unlike Mageddon, the Joker has no broadcast feature).
Edit: Just remembered. "JLA One Million". Somebody actually did weaponize the Joker's psyche once, by digitizing it into a mind virus and unleashing it on the population of the planet Pluto, in the future. Fifteen million people immediately tore themselves apart in an orgy of horrific violence. Seriously. The Joker's mental state is a thing of cosmic horror.
Sure, you can find others that have killed more individuals, and others that have killed more people in more disgusting fashions, and maybe even others who have killed for more petty reasons (although since the Joker has killed people he didn't even know simply for existing, purely at random, that last one is iffy), but here's the rub: you can't find any one other entity that exceeds the Joker's evil in more than one specialized category, and all of those lag behind him in others. There's just something uniquely bent in there, that defies easy description... but we can see its effects on the few entities that have actually gone deep into the Joker's psyche, looking for it.
In pure all-around comprehensive "What the fuck is
wrong with this guy?!?", the mofo redefines the golden mean of fucked up.
Edit: OK, now that I think about it, maybe you could nominate Darkseid here. Of course, consider just how horrific someone's psyche is, that you actually have to ring in
Darkseid to find something possibly worse.