Yes, in some storylines, the Joker has killed Alfred.
It depends on the specific comic arc. In some versions, the Joker does commit this act, causing significant impact on the Batman storyline and his character development.
No, Alfred is not the Joker. Alfred is Batman's loyal butler and confidant.
It depends on the specific comic. Sometimes the writers take a darker turn and have Batman cross that line, but it's not a constant occurrence.
In some comic storylines, Batman has not killed the Joker. He adheres to his moral code of not taking a life, even of his arch-nemesis.
In most comic storylines, the Joker doesn't manage to kill Batman. But there are alternate universes or special story arcs where it might happen.
In most comic storylines, Batman doesn't kill the Joker. His moral code prevents him from taking a life, even that of his greatest nemesis.
Yes, sometimes in certain comic storylines, Batman has been shown to kill the Joker under extreme circumstances.
No, Alfred is not the Joker. They are distinct characters in the comic world.
No, Batman usually doesn't kill the Joker. His moral code prevents him from taking a life, even that of his arch-nemesis.
In most Batman comic strips, Batman doesn't kill the Joker. He believes in justice and upholding the law, not taking a life, even of a villain like the Joker.
Yes, in the Injustice comic, Batman does kill the Joker under certain circumstances.