User blog comment:OnePieceNation/F*** Togashi and his gender ambiguous characters./@comment-4828844-20150523043501/@comment-25506276-20150524194236

"Singular they" is the most convenient way to represent the article, even though it may cause ire for grammarians and possible confusion for non-native speakers.

Using "he" would cause significantly more problems than it'd solve. Not even Japanese wikis use 彼 on Pitou pages, it inaccurately represents the character. You'd better be prepared to label Maha as Zeno's father if you think this is the correct choice of action.

Ideally, from an academic standpoint, the article should be written to avoid pronouns whenever possible, and use "he or she" when its unavoidable. But you couldn't just replace the entire page's pronouns with "he or she" because it'd become an unreadable mess, and it's not supposed to be used in such a personal context in the first place. But until the English language comes up with an easy translation of 奴, choices are limited.