#4 Rey Mysterio
When you consider injuries, suspensions and time spent no longer an employee of WWE at all, the better part of the past 8 years has been largely missing Rey Mysterio.
While he was still in WWE, his legacy was being tarnished with constant breaks, a failing body that was out of shape, and more than likely a disinterest in sticking around, which prompted his exit and other ventures elsewhere.
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Out of nowhere in the 2018 Royal Rumble, his music hit—and, for the record, wasn't met with boos like in 2014 when he was the #30 entrant.
Just like that, it seemed like everyone had been transported back in time to the Rey Mysterio of old, who was suddenly in better physical condition than we had seen in years and gave off a vibe that this was special and fun again.
He only managed to eliminate one person (Adam Cole) and add roughly nine and a half minutes to his cumulative Royal Rumble total, his big win is mostly due to his status as a legend and this being a major improvement from what we had gotten used to seeing years ago.