Nightwing
Although Nightwing is commonly associated with Batman, the title and concept have origins in classic Superman stories. The original Nightwing in DC Comics was an identity assumed by alien superhero Superman when stranded on the Kryptonian city of Kandor with his pal Jimmy Olsen. Drawing inspiration from Batman and Robin, the two protect Kandor as the superheroes Nightwing and Flamebird. Following the Crisis on Infinite Earths continuity reboot in 1985, Nightwing was re-imagined as a legendary vigilante from Krypton whose story inspires Dick Grayson's choice of name when he leaves behind his Robin identity.
Marco Hietala
Hietala joined Nightwish in 2001 when Tuomas Holopainen and the band's manager called him and said that there would be a place in the band for a vocalist and a bass player. "Century Child" was his first Nightwish album, following the departure of previous bassist Sami Vänskä. He was a prominent guest musician in Delain, a project involving many members of the gothic and symphonic metal community. He also participated in the recording of "Invitation", by Altaria, providing backing vocals. Hietala has also been part of the bands Sinergy and Northern Kings.