Batman (Frank Miller)

In his earlier works The Dark Knight Returns and Batman: Year One, Frank Miller's incarnation of Batman managed to maintain his heroic qualities even with the darker nature of the narratives. However, in later stories All Star Batman and Robin the Boy Wonder and The Dark Knight Strikes Again, Miller's incarnation of Batman is a sociopathic "hero".

All Star Batman and Robin the Boy Wonder
In what is said to be the canonical start of all of Miller's Batman works, Bruce Wayne first appears to watch the performance of Dick Grayson, age 12, and his family with a particularly creepy focus on Dick. When Grayson's parents are killed, Batman abducts Dick against his will, saying he's "drafted into a war", and takes him into the Batmobile. When the police give chase, Batman violently rams the Batmobile through their cars, splitting one in half. He posits on how the police is corrupt and smacks Dick when the child understandably cries out of fear. Although Batman briefly questions his actions, he nevertheless keeps Dick as a prisoner.

At the Batcave, Batman shows a childlike annoyance in Dick's lack of wonder at the sight of the Batcave and leaves him there. When asked what he should do, Batman simply tells Dick to survive on his own and eat at the rats that show up. Alfred becomes concerned for the child and gives him food and warm clothes, which drives Batman into a rage wherein he almost beats Alfred down for "interfering".

This is also the incarnation of Batman that spawned the infamous meme "I'm the Goddamned Batman", said as part of a longer insult towards Dick.

The Dark Knight Strikes Again
In the years following the events of The Dark Knight Returns, Batman returns to action to enact against the tyranny of Lex Luthor. However, his actions are more in line with those of a terrorist rather than a superhero. In his instance of attacking and taking down Luthor, he does not stop the villain right there, instead preferring to rely on terrorist acts to get back at the leader.