StarFan15 was a user who didn't seem to follow the site's Codes of Conduct. He made inappropriate and unacceptable movies that contained swear words and obscene language, culturally offensive content, insulting, abusive, and disrespectful remarks, and violent themes. He also revealed his private information and added links to external sites. The reason why StarFan15 made these kind of movies was because he got inspiration from Newgrounds, a website with very inappropriate content that is not safe for young children. Eventually, StarFan15 got banned from the site because he broke the site's rules and didn't use them properly. 

Note: StarFan15 didn't mean to break any of these rules. He got banned, leaving 10 of his movies still up.