* Complexity: Characters who are complex and multifaceted are often more interesting and compelling than characters who are simple or one-dimensional. When an audience can see different aspects of a character's personality and motivations, they are more likely to become invested in the character's story.
* Ambiguity: Characters who are morally ambiguous or have a dark side can be both fascinating and repulsive. This ambiguity can create a sense of tension and uncertainty in the audience, as they are unsure whether to root for the character or to fear them.
* Power: Characters who have a lot of power or influence can be both admirable and terrifying. This is because power can be used for good or for evil, and an audience may be drawn to a powerful character's potential while also being afraid of what they might do with that power.
* Unpredictability: Characters who are unpredictable or wild can be both exciting and unsettling. This is because an audience never knows what to expect from these characters, and this uncertainty can keep them on the edge of their seats.
* Relatability: Characters who are relatable or have a relatable backstory can be both heartwarming and heartbreaking. This is because audiences can connect with these characters on a personal level, and they may feel empathy or compassion for them.
Ultimately, the reason why a character inspires fascination and repulsion is subjective and will vary from person to person. However, the reasons listed above are some of the most common factors that can contribute to this reaction.