#classic!papyrus

Gaster is some sort of deep sea monster. He’s not based on any particular species but conglomerate of a Viper fish, bichir, and whatever vibe Subnautic has going on.

He was a good dad, though a workaholic.

Crepuscular: he was most active at dawn and dusk. The rest of the time, it was difficult to catch sight of him.

In his time, Gaster mapped out the entirety of archipelago, and created a comprehensive catalogue of it's many native plants and animals.

Said to be an expert on thermal dynamics and, surprisingly enough the weather. It was also said that W.D Gaster had intimate knowledge of the habits of landlubbers (humans), but if he stored this knowledge anywhere, it's been lost to the sea.

Nowadays, Alphys is considered the foremost expert on humans.