Aballister Bonaduce was a wizard and head of the Triumvirate of Castle Trinity. Aballister Bonaduce was the nemesis of his son Cadderly Bonaduce. Calculating, cold, and merciless, Aballister did everything to see his quest for the Chaos Curse completed. Guided by the goddess Talona, Mistress of Poison, Aballister created the Chaos Curse and unleashed it upon the Edificant Library, home of Cadderly and his friends.


Not much was known of Aballister's previous life before he created the Chaos Curse. He spent some time at the Edificant Library after he left Carradoon, though he was asked to leave because of his desires and choices in the use of his magical arts. When he was expelled, he left his son at the library under the care of Headmaster Avery Schell, who became a father figure to young Cadderly.

He was killed by Cadderly in a spell duel on another plane of existence.


Aballister's familiar was the imp Druzil, who himself held the wizard in distaste. Aballister was also the leader of the wizards of Castle Trinity, located north of the Edificant Library in the Snowflake Mountains and later the head of the sect itself.