#4 He has been in a four-man team before
The Undisputed Era has dominated NXT over the past few years, their domination has taken over the brand and now all members of the team are holding gold. Adam Cole is NXT Champion, Roderick Strong is the NXT North American Champion, whilst Bobby Fish and Kyle O'Reilly are Tag Team Champions on the developmental brand.
Cole has slotted into this group so easily and this could because it isn't the first time he has been part of a four-man group. During his time in PWG, Adam Cole was part of a four-man group alongside Kevin Owens and The Young Bucks, Matt and Nick Jackson.
The group was known as the Mount Rushmore of professional wrestling but were often just referred to as Mount Rushmore when competing together. That being said, it's easy to see why the stars would call themselves by this name since Kevin Owens is now a former Universal Champion, Adam Cole is dominating in NXT and The Young Bucks have definitely proven their worth as part of the AEW roster in recent months.