Doctor Know, short for Doctor Know-It-All, is a powerful sorcerer who frequents the fringe dimensions looking for lost souls and broken barriers. He has short, dark, curly hair and his eyes have purple pupils. He always wears his trademark purple and gold scarf and gray trench coat, but otherwise dressed in vintage clothing and has a strong liking for "geek" themed t-shirts. Wearing a gold wedding band on his left ring finger, he appears to be a man of African descent.