Respuesta :
Since it is mentioned above that the character has no positive traits and is purely evil, I would say that this is an example of a FLAT character. Characters who are classified as flat are those that do not change throughout the entire story. It is the complete opposite of a ROUND character who shows development as the story progresses. Hope this helps.
SOS:
The answer is flat!!
*flat character: one-dimensional character with one primary trait.
Hope this helps!!