- For episodes 50 73, the opening theme is by Color Bottle while the ending theme is by Moumoon.
- The opening is called " R . O . C . K . " by iLL with a CD single released on January 28, 2009 while the ending is sung in English by moumoon, which was released as a CD single and as a CD single with a DVD on February 25, 2009.
- A special advance screening was shown on Animax on December 30, 2008 at 11 : 30 PM . Viper's Creed was subsequently broadcast on Animax and BS11 channels, the former being the first to air it on January 6, 2009 at 10 : 00 PM before BS11 aired it on its channel on January 10, 2009 at 11 : 30 PM . The opening song is called " R . O . C . K . " by iLL with a CD single released on January 28, 2009 while the ending song " Ai no Oto " is sung in English by moumoon.