There is no clear answer to what would happen if Professor X became the Ghost Rider. The question has been posed in various online forums and social media platforms, but it remains a hypothetical scenario with no official Marvel storyline or comic book issue dedicated to it. However, fans have speculated that if Professor X became the Ghost Rider, he would likely use his powers to fight evil and protect the innocent, just as he has done as the leader of the X-Men. Some have also suggested that he might sell his soul to Mephisto in exchange for the power of the Ghost Rider. While there is no official artwork or storyline for this scenario, some artists have created their own interpretations of what Professor X as the Ghost Rider might look like.