Who is the leader of Avernus? The DMG says Zariel, but all the wikis Bel. I know they often fight, so which one is current?

Zariel. Asmodeus demoted Bel, who is now Zariel's advisor. Such is the politics of the Nine Hells! https://t.co/fNLpqwhsvx

— Christopher Perkins (@ChrisPerkinsDnD) April 27, 2015