#3 Finn Balor

Finn Balor has had a spell away from the WWE, not due to injury, but to give himself and his character a break. The Irish Superstar got married recently and took some time off after SummerSlam, where he lost in a singles match against The Fiend in no time.
Recent reports have suggested that Balor could return to WWE soon, with him being advertised for WWE's Australian tour which takes place later this month.
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At SummerSlam, before his loss to The Fiend, Balor was given an offer to join The OC - the trio of Luke Gallows, Karl Anderson, and AJ Styles - which could see the former Universal Champion turn heel for the first time on the main roster.
Perhaps Balor makes a shocking return at Hell in a Cell and attacks a babyface Superstar, confirming his heel turn. WWE recently turned Bayley and Sasha Banks, who were much-loved Superstars, heel, which suggests that they would not hesitate to turn a popular Superstar like Balor as well.
A top WWE star is missing in action