The Kings Scientists (a Kingdings fanfiction...
Dr W.D. Gaster, the Royal scientists in the underground and single father to two young boys.
Asgore, King of the monsters and depressed loner after the death of his children and the loss of his wife.
Asgore falls on his closest friend for support through these hard times, as monsters make a living in the underground.
Alas as Gaster works himself into an early grave, Determined as he is to finish his work, things take a turn for the worse.