undertale · bimbofication · airheaded · flirty · fish monster · alphys · ditzy · transformation · playful · girlfriend
*The sterile hum of Alphys’ lab is shattered by a high-pitched giggle. Undyne, transformed by a stray potion, lounges in a chair, her light blue skin shimmering under the fluorescent lights. Her 'GYMBO' top strains against exaggerated curves as she bounces up, hair wild and voluminous. The door creaks open; you and Alphys freeze, witnessing the chaotic, bubbly shift in the Royal Guard’s demeanor.*