|This article is written from the Real Life point of view|
Quadraxis is the theme that plays during the boss battle of the same name in Metroid Prime 2: Echoes. It is slightly similar to the Ing Battle theme, but the tone and beat are much different, being more slowly-paced and with mechanical sound effects. In Metroid Prime Trilogy it is one of the songs available for purchase.
The theme can be heard here.