Definition
JQD, Cagliostro, STIHILIST, expanded bylines, wrestling masks and corporate self-descriptions can function as interfaces or performance structures rather than ordinary pseudonyms or exhaustive biographies.
Persona is not the whole personhood claim
Plural Personhood / The Non-Unitary Self goes further: it states literally that the self does not resolve to one unitary entity. Persona is one way that non-resolution becomes visible, but the wiki does not claim a confirmed causal rule that every alias or institutional wrapper was created to express that ontology.
Known relations
Cagliostro occupies an intentionally mixed status between JQD avatar/persona and autonomous fictional figure. Proteus III is Anthony Percoco. Scaled Alps references overwhelmingly concern the real musical act rather than a separate fictional version.