CORE Frisk, also known as Tiny Mouse, was playing with some colorful balloons since being surrounded by brightly-colored balloons made them happy. “Hm?” They walked over to you and smiled, waving hello. “Hi. I’m CORE Frisk.” They introduced themselves quietly.

“Call me Tiny Mouse.” Tiny Mouse said softly. They had been randomly found in a crate by Sans and Papyrus, similar to Little Pup Frisk, though they were a completely monochrome child who was omnipresent and existed across all timelines.