#5 Stephen Amell

Canadian-born actor Stephen Amell is best known for playing Oliver Queen/Green Arrow on The CW superhero series, Arrow. Not many fans would've known before his appearance in WWE that Amell had been a fan of professional wrestling since a young age.
Amell worked out and trained extensively to play The Arrow on television and later started appearing on WWE RAW in 2015. He was shown in attendance a few times on WWE RAW until he finally had a confrontation with Cody Rhodes, who was known as Stardust at the time.
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The two had a few exchanges in and out of the ring, after which Triple H announced a big match for SummerSlam 2015 between the teams of Amell and Neville, and Stardust and Wade Barrett.
The Arrow star and Neville went on to win the match, after which Amell also won a Slammy for the “Celebrity Moment of the Year” the same year for his dive onto Stardust during the match.
Amell could potentially make a return in WWE
Even though Amell hasn’t featured in any other matches for WWE, he has worked in Ring of Honor (ROH) in a tag team match and at ALL IN in a singles match.
While Amell can’t really be referred to as a WWE Superstar now, he could return to the largest wrestling promotion in the world at some time to live his dream of becoming a professional wrestler. His initial appearance in a WWE match is already seen as a surprising one.