Wg4 Universe

The Wg4 Universe (WG4宇宙 Wg4 Uchū,) alternatively considered as the Wyvern 0m3g4 Universe (飛竜オメガ宇宙 Omega Hiryō Uchū,) Wyvern Universe (飛竜宇宙 Hiryō Uchū,) and Wave Universe (波宇宙 Nami Uchū) is an alternate universe to the original canonical universe, and as such, contains events, characters and other details that may differentiate from what's normally seen in the manga and anime. Despite being an alternate universe however, the differences between this and the original universe appear to be small in scope, with everything up to the Thriller Bark arc and canonical movie, Strong World, having happened as seen in the manga and anime, while everything afterward becomes altered as a result of the actions of original characters seen in this universe.

This universe is also the main setting for the One Piece fanon story, One Piece: The Jolly Age, written by Wyvern 0m3g4.