Originally posted by AuraAngel
No. Because he is the Big Bad.
Which is not an argument for why he is the most "evil".
Blackbeard is the biggest contender for current big bad of One Piece, yet Admiral Akainu (Admittedly another contender for big bad), Hody Jones (A mere arc villain), and Caesar Clown are examples of characterrs more evil.
Danzo's selfish and hilariously cruel yeah. But at the end of the day, he was just aiming for a political position and was doing whatever he could to get there.
Plus he was a Hero for the Imperium.
Orochimaru is the closest to Tobi, mostly because his disregard for human life goes as far as to kill 50 infants(Tobi only tried to kill one). However, since Tobi's kill count is far higher(and his goal would have him kill everyone on the planet effectively), he's still objectively the more evil.
That's a rather simple system of morality you have there. Although originally it seemed Tobi just wanted to be a godlike figure, as the evidence stacks up it seems he actually buys the whole peace through the destruction of free will thing, and while still an evil act, isn't nearly as selfish was wanting to become some sort of Shinobi god because you feel you should be teh haxxors. Orochimaru is as of current evidence worse.
Madara is planning the same thing but hasn't done as much evul. Even if he turns out to be the man behind Tobi, Obito's actions are heavily hinted to be his own.
It's hard to say. He hasn't done anything particularly evil yet, but he is such an unpleasant person and the fact that Kurama, a chakra beast made from the malevolence of an Eldritch Abomination, finds him too much of a douchebag to be around is telling. He also hints that he has the most evil chakra he's ever seen. Give Madara some time, with what little we have, we know he is a sexist warmongering douche.
Though, admittedly, he does have one arguably redeeming feature: He didn't like the idea of using his full might against a child, but that could arguably just be him being a condescending douche (Considering his character, likely).
Ha! Everything evil Sasuke has done, Tobi has done ten fold. This was the stupidest alternative. Tobi is planning to become a god and has killed tens of thousands just to get there.
Sasuke was a stupid example mostly for the inconsistency of his character.
And kill count isn't everything.
I'm pretty sure Johan Liebert hasn't been responsible for nearly as many deaths as Tobi, but would you argue Tobi is more evil than the titular Monster? I doubt it.