5 WWE Superstars you didn't know were in TNA Impact Wrestling

#4 Dean Ambrose

Ambrose appeared in TNA in a dark match in 2008.

Debuting on the WWE main roster as part of the Shield, Dean Ambrose has been a tour-de-force since bursting onto screens in 2012.

Whether it be as part of the hounds of justice, going it alone as WWE Champion, or his recent heel turn and feud with Seth Rollins, Ambrose has been consistently entertaining.

But before he made it to the WWE, Ambrose appeared in Impact, just before the Final Resolution 2008 event.

Performing under Indie name Jon Moxley, the future Money In The Bank winner won a dark match in five minutes, with the match surfacing online.

That company decided not to sign Ambrose however, who returned to the indies not long after, before eventually joining the WWE, where he has become a huge star, and someone with the TNA Executives must regret not signing.