Deadman

"So we gonna stand here and twiddle or are we gonna get down to business?" - Deadman

Boston Brand was the star attraction of a circus, an acrobat who performed under the alias Deadman...until the night he was killed in the middle of a performance, thus becoming a real dead man. The only thing Boston knows is that the man who killed him had a hook for a hand. At Batman's urging, Boston decided to use his new supernatural powers to find his killer...and have some fun along the way.

Until Deadman met Batman, he had been extremely resentful that not only had no one cared about him (His death didn’t even make the papers) but he was cursed to wander the Earth. He was surprised to hear that Batman had been working his case and was looking for his killer.

Powers.
In addition to being a great acrobat, Deadman as a spirit could Fly and possess people.