Lusus Naturae

"Lusus Naturae" is a song from the RWBY: Grimm Eclipse video game soundtrack, released as part of the Horde Mode update on October 13th, 2016.

It was written and performed by Jeff Williams. The full song plays over the video game credits. An instrumental version of the song is used as background for the main menu.

It is presumably written from the point of view of Doctor Merlot, the main antagonist of RWBY: Grimm Eclipse.

Trivia

 * The title of the song roughly means "freak of nature" in Latin.