4. The Demon King

There's no character with an alter ego quite like this. There's no wrestler on Raw who can play two different people as well as Finn Balor does. And one has to agree, The Demon King is one of the more impactful gimmicks the WWE has had for a while now.
The Demon King when it was first introduced on WWE had an immediate impact and it all played into the feud Balor had with Rollins at that time. WWE has a goldmine sitting dormant with this and they are not realizing it.
Breaking Vince Russo and Jim Cornette update HERE.
WIth Balor's alter ego WWE writers can take the storyline into so many different dimensions. The added versatility provided by the Demon King would be so much more than what the type musclemen that are currently ruling Raw have to offer.
WWE could end up bringing a completely new fresh approach if they decide on giving Balor a push.
One wrong move ended Big E's career - Watch Here!