#4 Jon Moxley
The former Dean Ambrose is one of AEW's high profile signings. Debuting at the end of last year's Double or Nothing, Jon Moxley made a significant impact when he attacked Kenny Omega to close the show.
The Moxley Vs. Omega rivalry was put on hold, though, when "Mox" was forced to undergo elbow surgery shortly before the pair's first scheduled encounter. The wait did not make their eventual bout any less intense, however.
Clashing in a controversial "Lights Out" match, Moxley and Omega engaged in a violent, weapon-filled brawl in the main event of AEW's Full Gear pay-per-view in November. Moxley won a bout that received mixed reviews due to its extreme content. Indeed, AEW later received a $10,000 fine from the Maryland State Athletic Commission because of the explicit nature of the match.
Moxley now had a first big win in AEW under his belt and quickly moved on to feud with Chris Jericho over the AEW Championship. Moxley emerged victorious over Jericho, becoming only the second man to hold AEW's top prize, and still holds the belt today.
AEW went all out to sign Jon Moxley when his WWE contract expired last year. Tony Khan knew what a difference a star like Moxley could make for his promotion - and the current AEW Champion has undoubtedly delivered for his new boss.