Question for the day!

Reports have classified the two, i.e. X and Tom Cruise as holding a vitriolic hatred of one another, with X even refusing to participate in a charity beach volleyball game starring the movie's cast with Cruise on the grounds that he was "dangerous", after which Tom Cruise and he physically assaulted each other for almost five minutes before it was broken up. Other actors have also noted that he prepares for his roles so extensively and meticulously, it is often done to the chagrin of cast and crew. Warwick Davis, his co-star from the 1988 fantasy ‘Willow’, defended him in his audio commentary for the film, describing X as a very funny man and a hard working, dedicated actor. X is also an avid musician. Who is X