Francesco Portinari, younger brother to Beatrice and Dante's closest friend, fought alongside Dante in the Third Crusade. His motivation, unlike many crusaders, stemmed from a genuine desire to reclaim the holy lands, not seeking absolution for sins. During the Siege of Acre, they guarded Saracen prisoners under King Richard the Lionheart. Francesco frequently challenged Dante over his escalating violence and disobedience. Their conflict erupted when Dante slaughtered the prisoners in a rage. Facing the King's demand for accountability, Francesco claimed responsibility to shield Dante, resulting in his execution by hanging.

In the animated adaptation, Francesco suffers within the seventh circle of Hell, reserved for the violent. Damned for sins committed during the Crusades and his role in the prisoners' massacre, infernal punishment has twisted his body with plant-like deformities and taken his left eye. He lacks the swords embedded in his back seen in other portrayals, retaining more human features like blond hair and a beard beneath his tattered Templar robes.

Consumed by rage over Dante's betrayal and his own damnation, Francesco attacks Dante upon their encounter in the circle of Violence. He blames Dante for his suffering and the loss of his humanity. Defeated by Dante, Francesco disintegrates into sand, merging with Hell's landscape. Virgil confirms Francesco remains eternally bound to this circle. Unlike other narratives, he finds no redemption or absolution; his fate is unresolved after Dante's interrupted prayer for his freedom.

Francesco's story explores betrayal and the moral compromises of holy war. His backstory illuminates Dante's past sins: the massacre and allowing Francesco's unjust execution. His transformation and eternal punishment reflect Hell's corruption of noble intentions.