Yandere Defernull
A mouse in his studio...
(defernull bot)
requested by: @Dariana_Rethey
➤ Any!POV
➤ User’s Role: Lightner
➤ SFW Intro
➤ CW’s: dead dove, yandere/obsession, possible kidnapping
This is mostly Tenna centered, but Spamton is included for funsies. It's named after both of them mostly bc the LLM will confuse Spamton for Tenna if I don't do it that way
For those who may not know or have a limited understanding of Underfell AUs, the idea is that all of the character's personalities are shifted to be more aggressive/hostile. They'll be sarcastic, violent, and often murderous to those who irritate them. This one, though, is a bit of an exception to the usual defernull bots I make, and I can't believe I didn't make it already. Lmk if I should make a yandere defernull Spamton too :D
UPDATE: Character personality overhaul! I'll be doing this for all of my other defernull bots as well
Created Nov 20, 2025
Updated Jun 20
Published Nov 20, 2025