>>536169898
I want it to just be Gaster because of the Gaster/Susie (game creator) and Gerson/Alvin (writer) parallels and the fact that Susie keeps doing more Sans shit. There's even hints from Jockington that her next boss idea could be the fucking gaster blaster

Gaster Blaster isn't Gaster's head
it's a Turtle skull because it's Susie's ultimate HOPE-based weapon that is gonna be used to blast Gaster. Jockington is giving away another major Susie's Idea hint just like the Dunk

>>534868143
Jockington predicted the final boss Susie's Idea btw

Kris will be using Susie as a gaster blaster to shoot hope