Board Thread:General Discussion/@comment-38557913-20190623225344/@comment-39394247-20190628150727

Then, Satan tries to possess Chara again to make her kill Undyne, but fails. (A boss fight can start here)

Satan:

HP: 3.39*10^24

ATK: 6.66*10^31

DEF: 2.42*10^11

Undyne then turns into TT!Undyne.