Name: Henka-Henka no mi (Morph-Morph Fruit)

Type: Paramecia

Appearance: a cross between a melon and a banana; black swirls on an iridescent background (like an opal gem) with a long, curled dark-purple stem

Power: the ability to change the inner and outer properties/appearance of the user's body and the bodies of others when in direct contact; restricted to humanoid forms- can't create new features (tail, gills, venomous fangs etc.); changes to the user are instinctive, but changes to others require focus

Example: denser bones- harder to break; change appearance to avoid marines; sharper teeth, but not fangs; easy to keep up own changes but harder to keep up others

Quick Idea: impersonate marines- possible? Should be able to change gender or not? too broad of an ability? Too vague? Ideas?