Popeye can punch without permission and Tintin can roam freely starting in 2025. The two classic comic characters who first appeared in 1929 are among the intellectual properties becoming public domain in the United States on Jan. 1. That means they can be used and repurposed without permission or payment to copyright holders. This year’s crop of newly public artistic creations lacks the landmark vibes of last year’s entrance of into the public domain of Mickey Mouse.