My friend did it because I told him about Vocaloid, and he liked Big Al; he also liked the Hagane series, except for Kaito and Gakupo, who looked too feminine to him. So, he made a heavy metal version for Big Al, manly like every heavy metal singer should be.
http://johnvmc2.deviantart.com/#/d2t9g2q
http://johnvmc2.deviantart.com/#/d2t9g2q
- Spoiler: