GASTER

Dr. W. D. Gaster is a mysterious and enigmatic character from the game Undertale, surrounded by numerous fan theories and speculations. Here is what is known about Gaster:

Mysterious Figure

• Creator and Scientist: It is believed that Gaster was the previous Royal Scientist before Alphys. He worked on projects involving the creation and use of Nuclear Energy, and also delved into the study of souls and magic.

• Mysteriously Disappeared: For unknown reasons, Gaster has "disappeared" from the game's timeline. Some characters speak of him as someone who vanished due to an unsuccessful experiment, leading to his disappearance or disintegration into particles.