Dashing and skilled prince who initially rescues Princess Belladonna and plans to marry her. He leads the quest to stop Leezar, endures capture, and is ultimately rescued by his brother to wield the Blade of Unicorn against the sorcerer.
They are brothers whose strained relationship gradually develops into mutual loyalty.
The plot identifies Thadeous and Fabious as sons of King Tallious and brothers. Fabious makes Thadeous his best man despite their differences.
King Tallious is Fabious's father and king.
Fabious is identified as a son of King Tallious, whose kingdom is threatened by Leezar.
Their romance motivates the rescue mission and concludes with marriage.
Fabious frees Belladonna from a tower, presents her after the victory celebration, and intends to marry her. They marry after Leezar is defeated.
Isabel provides crucial assistance to Fabious's rescue mission.
Isabel rescues Fabious and the others from Marteetee's monster, then joins the party in the effort to reach Leezar's castle.
Fabious is Leezar's principal opponent and delivers the final killing blow.
Leezar kidnaps Belladonna, while Fabious leads the quest to rescue her and ultimately impales Leezar with the Blade of Unicorn.
Their service relationship is undermined by Julie's secret betrayal.
Julie is explicitly described as Fabious's eunuch slave and secretly reports the brothers' progress to Leezar.
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