Millennia worth of experience may cause variance on the matter, but...

* CompleteMonster:
** Vandal Savage practically invented evil as a human concept. Born Vandar Adg, a caveman who received super intellect and immortality from a meteorite, Savage used his endless life to become the biggest monster he could. [[HistoricalRapSheet Over the millennia]], he has been one of the most vicious and depraved men in history and one of the [[MagnificentBastard most efficient]] [[ManipulativeBastard manipulators]] in the DCU, with billions of bodies to his name. Savage has spent his time as TheManBehindTheMan to many conquerors, [[TheChessmaster organizing conquests and massacres]]. Vandal has also fathered legions of monsters, but with the exception of one child, he considers the rest pathetic and treats their lives or deaths as not worthy of his attention. His treatment toward his sole legitimate child, Scandal, [[AbusiveParents was no better]]: on her birthday, he forced her to run a gauntlet of men beating her, and if she failed, he swore he'd murder her mother. Despite Scandal being a lesbian, Vandal wants a male heir- and has no compunction having Scandal raped by other supervillains to get it. Vandal's crimes have also including introducing a new drug in the stead of heroin that burns out its users to death very quickly, multiple murders and [[ImAHumanitarian cannibalism]] (which he might well have invented as a concept), attempting to pull an asteroid down to earth and murdering Golden Age superheroes with their families after founding a Neo-Nazi group called The Fourth Reich. His sole motives are [[ForTheEvulz fun]], [[ItAmusedMe boredom]], or [[AGodAmI to shape the world in his twisted image]].
** In ''WesternAnimation/JusticeLeagueDoom'', he is a conqueror with genocidal plans for the planet. He manages to steal the protocols that Batman designed to defeat the Justice League in case one or more members of the Justice League turn evil. Savage makes these protocols more lethal and sadistic and then uses them to take out the Justice League. After his LegionOfDoom seemingly triumphs over the Justice League, Vandal Savage informs them he plans to conquer the world by using a missile that will cause a solar flare that will kill half the world's population. This event will also render the rest of the world's population so weak and helpless that they will naturally accept his leadership.
* FoeYay: Primarily with the Immortal Man and Resurrection Man, but also with Wally West during his stint as the Flash.
* MagnificentBastard: He behaves magnificently, and he's [[CompleteMonster a bastard of a man]].
* MoralEventHorizon: Considering just how much of a [[CompleteMonster scheming, sadistic, bloodthirsty animal]] this man is, and the number of centuries he's had to commit his atrocities, it's difficult to say just ''when'' he crossed the point of no return (if ever there was one for him); however, any one of the following events are good contenders: destroying the legendary Atlantis through the manipulation of the then-newly-formed Illuminati; razing Montevideo, Uruguay alongside the artificial sun Solaris in a plot to assassinate Superman-Prime; kidnapping a little girl and burying her alive in a [[DeathTrap booby-trapped graveyard]] in an attempt to kill the Flash; [[spoiler:orchestrating the near-rape of his daughter]]; putting a hit on the lives of the Secret Six to blackmail Scandal into producing an heir for him...of these and other moments, take your pick.
* MyRealDaddy: Creator/ChristopherPriestComics, usually. Priest's Savage had a lot more depth than most iterations, and was arguably the most MagnificentBastard in all of the DCU.
* OlderThanTheyThink: Ironically, Wizard magazine, the most "mainstream" magazine on comic books, once contemptuously referred to him as "a cheap Ra's al Ghul knockoff". Actually, Vandal Savage predates Ra's by ''twenty eight years''-—Savage first appeared in 1943, while Ra's appeared in 1971.