This version of Frisk is one of the main protagonists of the fan AU “twin runes” by Akanemnon alongside Kris and Chara, they are portrayed as being very childish, energetic, and affectionate, they also have a straight-forward way of thinking, and have a lot of determination, they once had a one-sided relationship with Kris (who originally wanted nothing to do with Frisk), but have now developed a sibling like relationship, as Kris is often seen carrying and/or holding frisk in promotional art