Gaster theories be like [#undertale #sans #gaster]

gaster showing trouble dingle to sans and papyrus

Welcome to the FIRST EVER Gaster Fridays! Every week... we Gaster it up!! YEAH!!!! YES!!!!!!! Since this is the first one, the first Gaster Friday, we found Gaster's commercial! Gasters? Let us know how you think. #UNDERTALE #DELTARUNEshow more

how i picture Gaster in True Lab if he... discovered IMAGE_FRIEND in undertaleshow more

Gaster tries to cheer up Vessel #DELTARUNE #GASTER #vessel

what sans would post after gaster shows him his... sick sound test room beatsshow more

epic gaster

PHARAOH GASTER???

this vid looks like gaster getting shattered across spacetime

Gaster gets checked

Was asked by Dunder Head to make this, so...... A message from Gaster #deltaruneㅤㅤㅤ Hi W.D Gaster!!!show more

Man, Gaster was NOT interested

gaster finding the prophecy

"HOW DID I GET THIS NUMBER...? I JUST DIALED... EVERY NUMBER SEQUENTIALLY UNTIL I GOT YOURS!!! (EVEN THE IMAGINARY ONES!)" #Gaster #Papyrus #Undertaleshow more

Gaster after Entry 17:

thanks susie gaster #DELTARUNE #susiedeltarune

what i think about the gaster discourse

Since Gaster created Sound Test, I like to think... he also created Control Testshow more