#2 King Corbin
Some people just have that delivery or look that make your blood boil. King Corbin had that in spades when he made his WWE debut a while back. That was turned up even further when he was made Constable of RAW two years ago. Corbin went mad with his power, using it to gain any and every advantage he could get.
His heel charisma was turned up even more so when he won the latest King of the Ring. The best options to win the KOTR tournaments are always heels so that they can brag about their accomplishments. It's exactly what Corbin did when he beat Shorty G in the finals. He might not have gone full Owen Hart or Booker T after winning the tournament but it has suited his character well.
Charlotte Flair to return and wrestle a CURRENT CHAMPION?
Adding a cloak and an actual crown added to his new heel persona and it made you want to see those props get destroyed. Corbin has always been a heel in WWE and it's easy to see why - he's great at it. He even mentioned as much during an appearance on WWE Backstage. He claimed that if fans tell him what they don't like about him, he's going to lean into those tendencies more. That's why he should be a permanent heel.