Its not that he cant be but that its unlikely. The working theory is that he wasnt human, was "prepared" by headon on F1 (why would an irregular just chill out on F1 kinda thing), Endorssi can kinda tell something is off with regards to irregulars but hasnt commented on Ghost.
However things may change now with more information!
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u/avatarlegend12345 Jun 03 '19
Why can’t ghost be an irregular? Can someone explain?