Should I be compensated or ask for a contract.

A friend of mine asked me to be in a company with him. He said I’m the marketing director and He said I was an entrepeneur, had me make a linked to connect to the company’s linked and it says I’m self employed. Asked me to link my Facebook and Instagram so it says the company name and that I’m an entrepeneur. He asked me to go to all the meetings and interviews. We were published in the Dayton business journal as a new digital marketing agency. He asked me to make videos about talking about rhe company and uses all types of pictures of me on his company page and uses my pictures and videos for his advertising and promotional content. But now he’s saying he just wants me to be an employee and I only make a portion of money on any sales I make. I’m wondering if that is legal