The Batman Who Laughs: The Full Story
4. Powers & Weaknesses
For so long since his introduction, readers had wondered what the deal was with the strange helmet/visor/crown thing. It wasn't 'till The Batman Who Laughs #4 that we finally got an explanation, but it was more sinister than anyone could have imagined. This wasn't just a fashion statement; the iconic headwear had a purpose.
Concerned for Bruce's health and sanity, Alfred attempted to take the visor off him, revealing his damaged eyes. Eyes that could now see through to the Dark Multiverse, as well as see people's fears and desires. Bruce explains that the visor is made of dark metal and can filter out the dark energy, allowing him to focus on what he wants to see.
Aside from the visor, the Batman Who Laughs prefers lethal weapons, while also having the strength of Batman to dish out vicious beatings when he needs to. His horrifically brutal style has earned him a certain level of respect but despite his reputation, he's not unbeatable.
Like all creatures of the Dark Multiverse, he is weak to Nth Metal, and could theoretically be taken out in a similar fashion to Superman - that is, if his psychotic mind doesn't fail him first.