TL; DR, provavelmente não nos quadrinhos
No final de "Morte da família"O Coringa estabelece uma peça elaborada nas cavernas do lado de fora da Caverna do Morcego, e implica que ele seguiu o Batman de volta há muito tempo.
In Batman #17, Joker hosts a mock dinner in the caves leading to the Batcave. Batman and his allies have been bound and doused in gasoline, with Joker warning against escaping at the risk of agitating the flint in the cave; everyone in the Bat-family save for Batman have also been bandaged. A brainwashed Alfred serves them with a cloche seemingly containing their own severed faces. When Joker threatens to ignite the gasoline, Batman escapes and triggers a blaze, but uses an explosive and his knowledge of the cave system to blow its roof open, allowing water to rush in from above and douse the flames. When he frees the others and they take their bandages off, it is revealed that they still have their faces — the whole scene was a sick ploy by Joker.
então
Batman pursues Joker to the edge of a large drop. Batman claims that he knows Joker's true identity, but to prevent him from saying it, Joker purposefully knocks himself over the edge and falls out of sight; Batman finds a notebook which Joker claimed held the secret identities of the Bat-family, but discovers it is blank. Meanwhile, the Bat-family are gassed into attacking each other, but manage to fight off the gas' influence. Later, in Wayne Manor, Batman tells a recovering Alfred that after finding the joker playing card in the cave, he confronted Joker about it in Arkham Aslyum as Bruce Wayne. Joker failed to acknowledge him and Batman realized that he did not care who Batman was under his mask.
Só para deixar claro, o escritor afirmou que Batman "tem evidências físicas de que O Coringa não poderia estar na caverna ... ele tem certeza de que isso não aconteceu ".