Is Peter Pan in Pandora's box?

No, Peter Pan is not in Pandora's box. Peter Pan is a fictional character created by J.M. Barrie, associated with the story of Neverland and the theme of eternal childhood. Pandora's box, on the other hand, is a mythological artifact from Greek mythology that contained all the evils of the world, released when Pandora opened it. The two concepts are from entirely different narratives and traditions.