Deltarune - "KFC" and the chocolates

Who will you trust?
One is a sociopath killer, that longs for the flesh of their victims, and tortures and laughs maniacally all day long. A maniac that can't be stopped, and has control over the cosmos and our fates. They know all outcomes and know ever possibility that will happen. This creature can destroy worlds and universes, but has one fatal weakness, chocolate.
The other one is Chara.