The mark consists of a female witch banshee with long hair, in tattered black clothing. She is clasping in her hands a staff made of inverted crosses. Below her is the literal element "DR. KNOW". The "R" is in the shape of an inverted cross followed by a diamond shape. The "N" is backwards, and there is an arachnid shape in the "O".
Color is not claimed as a feature of the mark.