My new genderfluid, pansexual, polyamorous bunbun. When presenting as male, he goes by Scott and answers to masculine pronouns. This is the dominant persona (and Scott is also this character's birth name). When presenting as female, she goes by Sarah and answers to feminine pronouns.
Sarah began as a way for Scott to explore his feminine side, but as time went on she became less of a mask and more of a separate self. Scott prefers women, while Sarah prefers men, but both of them are pansexual. Scott will sometimes wear Sarah's clothes and makeup, if he doesn't feel feminine enough to become Sarah but still wants to be pretty. He still identifies as male while crossdressing. The easiest way to visually tell the difference is that Scott won't wear fake breasts while in drag, while Sarah is never seen without them (because fake or not, they're her breasts).
This character can be referred to in general (addressing either persona, or both at once) as S., using neutral pronouns. Scott is to be referred to with masculine pronouns (some rule-bending is acceptable when he's in drag). Sarah is to be referred to with feminine pronouns only.