I propose that we remove https://villains.fandom.com/wiki/Adel_(Final_Fantasy) from the Pure Evil category. Her personality is said that she is remorseless, cruel, and is the personification of evil, but other than what was said in Final Fantasy VIII, there’s really nothing more said than this. In the past, she was feared, but in the game, there was really nothing to add beyond this. We don’t know how cruel of a ruler she was in Esthar, we don’t know how many she’s murdered or if she’s murdered. The atrocities she’s done were only implied, and it can’t really get past this in the game. So I don’t think there’s enough information to classify Adel as "Pure Evil."