I wonder how Raphael would fit into this, seeing that the comic is 4 years earlier than the film's setting? Maybe its heard over conversations with the European characters, noting how there were pirates and sailors were showing up as skinned bodies hanging from trees or heads with their spines missing, including the disappearance of one of the most notorious pirates around. That would be a cool moment, where both European and Native sides share their stories about the invisible demon that hunted the Americas. Adds to the whole supernatural atmosphere that is a welcoming and needed feeling for the film.