Error!Frisk is the protagonist of ErrorTale and they meet Error!Sans in the Ruins. She is scared of Error at first, and mistakes him for Undertale Sans.
They are the same as normal Frisk but the colors are inverted. They also have the word Error around their body in some places. They have a Chara eye and a Frisk eye, but she has a sweater like Frisk's. They have the word or on their cheek instead of Error. They have an Error ok the left side of her forehead. Her sweater is bright orange and bright green striped. She has light blue/grayish hair and dark blue skin. In some photos, her blush is a light blueish grayish color
Error Frisk used to be Frisk, so you can tells they would be really nice, but they are very shy and cry a lot. They have a crush on Sans, which would be obvious considering they used to be best friends before they became a glitch. They hang or live with Error Sans, which they might like him, considering he is exactly like their crush. They love the little classic Sans doll, that Error has. In comic dubs, when Error takes it away from them, she cries.