#16 Chris Jericho

Chris Jericho is one of the biggest ex-WWE Superstars who featured at Double or Nothing after signing for the company earlier this year. Jericho, a Triple Crown and Grand Slam Champion in WWE, faced off against Kenny Omega at Double or Nothing and won the match.
#17 Kenny Omega

One Superstar that WWE would regret letting go of is Kenny Omega, who was WWE's developmental territory Deep South Wrestling, back in 2005. He never wrestled on WWE television but he was signed with them.
#18 Dean Ambrose/Jon Moxley

One of the biggest surprises of Double or Nothing was the appearance of Jon Moxley, who was known as Dean Ambrose in WWE. Moxley, whose contract ran out at the end of April, made his way through the crowd, attacked Jericho, the referee, and Omega, and then went on to inflict more damage on Omega to end the show.