In "Final Fantasy VII: Advent Children," Vincent Valentine emerges as a darker, more enigmatic ally. Haunted by his past and the experiments that transformed him, he aids Cloud and friends in battling the remnants of Sephiroth. Vincent's unique ability to transform into monstrous forms, like Galian Beast and Chaos, showcases his power. Cloaked in a red cape and wielding the Cerberus gun, his loyalty and willingness to protect what he values become evident.