Here’s an Avalon/Valon side-by-side.

Yes, they are the same person. Valon is genderfluid, and because of this eir gender expression varies greatly depending on if ey are feeling more homme or femme on a particular day. Homme is Valon, with male pronouns. Femme is Avalon, with female pronouns. It’s obvious whether Valon is feeling homme or femme, so there’s little guesswork.