Kent Nelson (Earth-167)

"Your fate is utterly binding."

- Doctor Fate to Clark Kent

Kent Nelson is the vigilante known as Doctor Fate.

Beast Boy's Observations
At some point, Kent Nelson became the vigilante known as Doctor Fate and met Clark Kent, who he told that his fate in becoming Superman was utterly binding. His voice was among one of those heard by Beast Boy whilst he was observing the multiverse from The Red.