Boss character based on Gaster from Undertale






















W.D. Gaster in Deltarune
Built it all from an empty room
Mike the Cat, yeah, that is Gaster
Even the Titan that is Gaster
In the bunker sits that Gaster
Entry 17's own master
Kris is Gaster, Susie, Gaster
Noelle, Gaster, all are Gaster
The Knight is an amalgamate
Made by Gaster, intricate
Gaster is actually green
Dad of Sans and Paps, I mean
He fell into his own machine
Split to atoms, quite a scene
He's a legend, immune to ruin
So he created Deltarune
Dess is missing, that is Gaster
Dark world also surely Gaster
And the vessel that we loot
Well, that is also Gaster's doom
And actually, damn Deltarune
That is also fucking Gaster
Change six letters, do it faster
And the result is
(In a corrupted voice)
Gaster