Nightwing
Nightwing is a fictional superhero appearing in American comic books published by DC Comics. The character has appeared in various incarnations, with the Nightwing identity most prominently being adopted by Dick Grayson when he moved on from his role as Batman's vigilante partner Robin.
Nightwish
On October 1, 2012, Nightwish announced via their Facebook page that they were parting ways with Olzon. According to the press statement, "it has become increasingly obvious that the direction and the needs of the band were in conflict, and this has led to a division from which we cannot recover". This announcement came days after Olzon fell ill at a show in Denver, Colorado and was unable to perform. Nightwish used replacement singers from the opening band, Kamelot, and Olzon later expressed her disappointment, saying "I was never asked if it was OK that they used Elize and Alissa in the show [Friday] night [...] I don't think it's a good decision they made and I'm sorry for those of you who came to see the whole band but got something else. But I was very ill and this decision wasn't mine." According to the statement, Dutch singer Floor Jansen (ex-After Forever, ReVamp) would sing for the remainder of the Imaginaerum World Tour.