Phantom Stranger

"Since the moment of his creation there has been no one in all the multiverse who could defeat him including the heroes you see before you."

- Phantom Stranger to Felicity Smoak, The Ray and Nyssa al Ghul during the Battle of Earth-85

The Phantom Stranger was a mystical being that was capable of interdimensional travel.

The Crisis
The Phantom Stranger appeared before Felicity Smoak, The Ray and Nyssa al Ghul after they travelled to Earth-85. Felicity knew who he was and asked him to take her to Oa and after looking into her future and realising that she was the only one who could find out who the Paragons were he obliged and transported them there.

He was presumably killed when the multiverse was destroyed.

Powers

 * Inter-Dimensional Travel: The Phantom Stranger was able to create portals to other universes.

Abilities

 * Mystical Knowledge: The Phantom Stranger had extensive knowledge of the supernatural.