#4 WWE Hall of Famer Kane (Devil's Favorite Demon / Corporate Kane)
When Kane became a part of WWE's The Authority storyline, aligning himself with the heel authoritarian group, he relinquished his mask to Stephanie McMahon and transformed into a corporate yesman. Positioned as a man of power, Kane became a thorn in the paths of numerous faces on the rise, including his former tag-team partner Daniel Bryan.
However, Kane soon became volatile and started sporadically appearing as The Devil's Favorite Demon. During his rivalry with Seth Rollins, the former world champion appeared as both his personas. The fluctuation continued until he was fired from his station by The Authority.
#3 Former WWE Universal Champion Finn Bálor (Finn Bálor / The Demon)
A timely entry as The Demon recently participated in a match for the WWE Universal Championship against long-time champion Roman Reigns. Bálor previously lost a title match to the same opponent, yet fans are fascinated about the outcome of the upcoming contest because The Demon exclusively appears in special circumstances and it's impossible to overthrow him.
The Bálor in Finn Bálor's ring name also refers to a demon king, although he continues to be a human entity without face paint. When The Demon materializes, Bálor unexpectedly turns into a supernatural being, cultivating fear in his opponents.