Nabu the Wise

Nabu is the spirit residing in the Helmet of Fate which grants Kent Nelson or other bearers of the Helmet the powers of Doctor Fate. After a battle with Klarion the Witch-Boy, Nabu nearly possessed Kid Flash permanently until the spirit of Kent Nelson dissuaded him.[1]

Powers

 * Magic: Nabu is a powerful, magical spirit.
 * Possession: Nabu possesses the mortal bodies of anyone who wears the Helmet of Fate.