The Outsiders is a fictional DC Comics superhero team. As its name suggests, the team consists of metahuman superheroes who do not fit the norms of the "mainstream" superhero community (the Justice League), and in some ways are similar to the X-Men of Marvel Comics. The Outsiders have had three incarnations. They were founded by Batman, whose ties to the League had become strained. The Outsiders were reformed in the early 2000s by Nightwing and Arsenal after The Titans dissolved following the events of 'Graduation Day', in which the heroine Donna Troy was killed by a rogue Superman android.