Captain Pan had medium-popularity during Season 3 of Once Upon A Time. This ship gained most attention during Season 3 in which both Hook and Pan appeared. However, this ship's popularity decreased during the next seasons with Pan's death and Captain Swan becoming canon.
Popular fanfiction/fanart tropes with this ship include Peter Pan as a demon and occasionally Killian as a priest. This is based on the line said by Hook: "Careful, he may look like a boy, but he's a bloody demon."