Michael Fassbender has revealed he's hoping the X-Men: First Class sequel will explore how Charles Xavier became Professor X.
The A Dangerous Method actor plays Erik Lensherr/Magneto in the franchise, and told Collider he thinks the spotlight might be thrown onto James McAvoy's character in the next instalment.
He said: "Hopefully, I'll get in at ground level and start putting some ideas together myself, with James and, hopefully, Matthew [Vaughn], and we can see what happens next.
"I'm really interested to see what happens to Charles, in the next one, and see how he becomes Professor X 'cause we got to see Erik turn into Magneto, in the first one."
He joked: "It will be interesting to see who shaves Charles' head. When he's drunk one night, the mutants will go in there and shave his head and shave off his eyebrows. Maybe."
Director Vaughn has previously speculated that the sequel could be set "in the latter part of the 1960s where you've got The Stones, The Beatles, Flower Power".