Undertale - Papyrus Theme Song - Bonetrousle -

"Bonetrousle" is the high-energy battle theme for Papyrus in Undertale , acting as an evolved, intense version of his overworld theme "Nyeh Heh Heh!". Composed by Toby Fox, the track features distinct marimba and violin sections and originally stems from an earlier project that eventually became Deltarune .