#4 Jeff Jarrett

This is a real example of how anything can happen in WWE because not many have had an uglier exit from the company than Jeff Jarrett.
Not only did 'Double J' Jeff Jarrett leave WWE under extremely bad circumstances in 1999, but he went onto run his own wrestling company who tried to compete with (and often annoyed) WWE. That's why it is still so surprising that not only did Jarrett get inducted into the WWE Hall of Fame, but returned to the company in a backstage role earlier this year.
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Jeff Jarrett's hiring was then followed by three appearances on WWE TV, where he entered the Royal Rumble, had a segment with Elias and was then defeated by Elias the following week. We have not seen Jarrett on WWE TV since, so I can't imagine a better place for him to make an appearance than the RAW Reunion. Jarrett will already have the convenience of being backstage anyway for his duties. The fans enjoyed seeing him back on TV and likely would again.
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