Board Thread:General Discussion/@comment-31252171-20171008174544/@comment-26858298-20171024103207

To me, it's definitely Sans' theme. People always say "then why doesn't it have the leitmotif of sans.?" Well, if it's Chara's theme, why doesn't it have Once Upon A Time?

Also, a lot of people say that instead of us fighting Sans, he fights us, as he makes the first move. However, technically on the Neutral Route, Undyne also makes the first move, turning us green (which does count, it doesn't have to be an attack for it to be a move). So would that mean Spear of Justice is ALSO Chara's theme? No, it wouldn't. I'd love to see someone try to make the argument that SoJ is also Chara's theme. Just because Sans makes the first move doesn't mean MEGALOVANIA is Chara's theme.

Also, if it plays when we fight Sans, then it should DEFINITELY be Sans' theme. Let's see...

Heartache = Toriel

Nyeh Heh Heh! + Bonetrousle = Papyrus

Spear of Justice + Battle Against A True Hero = Undyne

Metal Crusher + Death by Glamour + Power of "NEO" = Mettaton

Bergentruckung + ASGORE = Asgore

Hopes and Dreams + Burn in Despair! + SAVE The World + His Theme = Asriel

Spider Dance = Muffet

Ghost Fight = Napstablook

Dummy! = Mad Dummy

They're their themes because they're what plays when you battle them! So why doesn't...

MEGALOVANIA = Sans

It makes a lot of sense.

Also, as mentioned by others, characters can have more than one leitmotif: Toriel has Fallen Down and Heartache, Papyrus has Nyeh Heh Heh! and possibly also Snowdin Town, Undyne has Undyne and BAaTH, Mettaton has It's Showtime!, Metal Crusher, Live Report and even a part of Death by Glamour is original, and Asgore has Bergentruckung, ASGORE and Determination.

Even Napstablook has Ghost Fight and Spooktune.

So why can't Sans have sans. and MEGALOVANIA?