Talk:Undyne/In Battle/@comment-33749296-20180807031344/@comment-35030974-20191120022015

"Originally, I was going to have each major boss have their own moving box BG. ASGORE's was going to be a bunch of boxes moving slowly in parralax. I actually programmed this... But in the end I only did this for UNDYNE and just removed the BG for all other boss characters."

-Toby Fox, on that particular subject.

He didn't really say why, but there you go.