Gasterology
The study and/or theorizing of W.D Gaster from Undertale and Deltarune.
Someone who participates in Gasterology is called a Gasterologist.
Someone who participates in Gasterology is called a Gasterologist.
Casual UT/DR fan: Why do people say Gaster is green?
Gasterologist: You wouldn't know, you don't know Gasterology.
Gasterologist: You wouldn't know, you don't know Gasterology.
Gasterology by Flibzy April 10, 2026
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