I Really Like Rocky BFDI

It’s really interesting how disconnected Pink is from the main story compared to the other shadow crystal bosses

Jevil is the reason why King became obsessed with the Knight and that indirectly makes him responsible for a lot of chapter 1

Spamton is always encountered in some form no matter what, kicks off the weird route, and is also half the reason Tenna is the way he is making him responsible for a lot of chapter 3

The Roaring Knight is the main villain of the game

Gerson is always a major part of chapter 4 and Susie’s overall arc whether you fight him or not

And then Pink is pretty much entirely contained to her own fight, she doesn’t really have anything to do with anything that happens in Chapter 5 and I don’t think she’ll affect anything after it either beyond maybe a bit of dialogue in the light world but on the bright side unlike the other Shadow Crystal bosses she is the only one who (probably) gets to go to Castle Town without being an item or anything