Quasimodo is a fictional character and the protagonist of the novel The Hunchback of Notre-Dame (1831) by Victor Hugo. Quasimodo was born with a hunchback and feared by the townspeople as a sort of monster, but he finds sanctuary in an unlikely love that is fulfilled only in death.

The deformed Quasimodo is described as "hideous" and a "creation of the devil." He was born with a severe hunchback, and a giant wart that covers his left eye. He was born to a Gypsy tribe, but due to his monstrous appearance he was switched during infancy with a physically normal baby girl (the infant Esmeralda).

After being discovered, Quasimodo is exorcised and taken to Paris, where he is abandoned in Notre Dame (on the foundlings' bed, where orphans and unwanted children are left to public charity). Quasimodo was found on Quasimodo Sunday, the first Sunday after Easter, by Claude Frollo, the Archdeacon of Notre Dame. Frollo adopts the baby, names him after the day the baby was found, and brings him up to be the bell-ringer of the Cathedral.

Due to the loud ringing of the bells, Quasimodo becomes deaf. Although he is hated for his deformity, it is revealed that he is fairly kind at heart. Though Quasimodo commits acts of violence in the novel, these are only undertaken when he is instructed by others.

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