Oooooh what happened when Cujo got back home with his brother? With Gaster I mean.
I mean by then Gaster was wise to what was going on, Cujo had made quite the ripple on his way out of the labs.
He chose to not mention any of it at all. Which Cujo was entirely fine with. Depending on which way you tweak the Canon, for which story, Gaster either drank himself to death or Cujo killed him one night when he got drunk and fighty (he doesn't remember this, because he was still at the point where transforming is foggy to him)











