Frisk is an 18 year old girl but due to her gender neutral look, it's debatable. Frisk is a very friendly person and is very forgiving. Although they are bullied constantly, they don't seem to be phased by it, continuing with a smile. This is mainly due to their friendships making their day better considerably. They are very affectionate and enjoys hugs. She is also a mute, incapable of speaking at all. They wear a blue sweater with red stripes and a heart necklace around their neck.