Deadman

Deadman is an often derided character whose concept is a little weird, but who has certainly had his time in the spotlight, proven his worth and shown himself to be very powerful.
Having first appeared on panel in Strange Adventures #205 (October 1967), the character – whose real name is Boston Brand – has worked alongside the likes of the Sentinels of Magic, the Justice League Dark and played a key role in the Blackest Night storyline as an important member of the White Lantern Corps.
He was a circus trapeze artist who dressed like a corpse for his act and performed under the name Deadman. He was killed by an assailant named Hook as part of a gang initiation ritual, but was granted powers in death by a Hindu god named Rama Kushna.
He could possess any living being, fly, walk through solid objects and be invisible – as well as carry out all the functions of a Corps Power Ring when he had one in his possession.