Hulk Can See Ghosts
Perhaps this is a power that the Hulk will never show off in the Marvel Cinematic Universe, but it’s nonetheless an interesting one that is hidden among the curiosities of the Hulk comic books. It all started when Bruce Banner accidentally killed his father, and fearing that he would come back to settle the score, Bruce gave the Hulk the ability to see ghosts. Because in the comics that just a thing you can do, and you don’t need the type of Marvel Cinematic Universe logic that equates things like gods and ghosts with science and technology.
With the Hulk’s unique ghost-seeing ability, he is one of the only beings that is able to see Dr. Strange when he is in his astral form, and that’s something to keep in mind should ghosts end up making their way into the MCU courtesy of this November’s Doctor Strange. If that happens, look for the Hulk to take on a much bigger role in the metaphysical side of Marvel films going forward.