Love
Love was one of the few things Dimentio failed to have. Count Bleck lost his love, Timpani (spying with invisibility payed off well). Nastasia longed for Count Bleck's love. O' Chunks wanted Nastasia's love. Mimi loved the hunky lifeguards she dreamed about.
But as he thought about it, Dimentio did have a love. It was not a love for another being, but a love for power. He loved to be in control when no one even noticed it, as he was now with his puppetry of their dear Count.
Dimentio especially loved trickery. It was so much like magic, such as the simple sleight of hand card tricks. Draw attention away from the real plan.
He had done some of his famous false motives with a young, wide-eyed girl of the same desent as Bleck. How fun was it to see her fall so much in love with him, then leave her hanging on the edge of despair when he "left" her! Instead, he stayed around her, unseen while he watched her little heart break because of him.
Then Dimentio realized he did love someone. Himself.
Author Note: Yes, there's an OC here. Don't hate me.