Separate from economic rights, the creator of a copyright protected work is also entitled to moral rights, which include the right of paternity (to claim authorship, remain anonymous or adopt a pseudonym); the right of integrity (to prevent distortion, modification or mutilation of a work); and the right of association (to control activities associated with a work).
Even if a creator has assigned his or her copyright in a work to another entity, the creator would continue to hold the moral rights to the work. Moral rights can be waived or bequeathed but cannot be assigned (transferred).