good evening

I represets a brazilian studio and a friend in artistical business area advise me to launch my doubts in this forum for help my knowledge of animation area. I don`t now if this is the correct thread for this subject. if don`t, please forgive me. the subject is the following:

we produced by our iniciative a animation whith an american famous character that wasn`t animated till the moment. we`re about show the project to owner. he don`t now about anything. for this presentation we need made a marketing research to now if fans would like to see this particular character in a TV show and how many access we receive. with this objective we pretend to post the animation in a public site like youtube, and see the expectatives of public. and finally with the number of access we show to owner the complete project.
what the american`s rights laws say?