#3 Nigel McGuinness
After his deal with the WWE had fallen through due to failing a pre-screening physical test, Nigel McGuinness stormed onto the Impact stage in October 2009 under the name Desmond Wolfe.
The former Ring of Honor World Champion immediately made his presence known by attacking Kurt Angle, igniting a big feud between the two, which saw two near perfect wrestling matches at Impact's Turning Point and Final Resolution events. From there, Wolfe didn't really go any further.
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Although a member of the Ric Flair Fortune stable, Wolfe would generally lose any big or stipulation matches he was in, and after a short-lived tag team with Magnus, Wolfe revealed he had tested positive for Hepatitis B and never wrestled for Impact again. Wolfe briefly served as the commissioner and a colour commentator on Xplosion, but was released from his contract shortly after.
After a couple years as a colour commentator for Ring of Honor, he finally signed with WWE in an announcer's position in January 2017.