Bilbo's sudden, monstrous transformation in Rivendell is the film's most visceral warning about the psychological damage the Ring inflicts on its keeper. For decades, Bilbo was preserved by the Ring, but that preservation came at the cost of his soul being slowly stretched and thinned. When he catches sight of the Ring hanging around Frodo's neck, his addiction flares up in a moment of pure, animalistic desperation. The brief, demonic distortion of his face is a manifestation of the "shadow" world—the dark reality inhabited by Sauron and the Ringwraiths. By showing this terrifying lapse in a character we love and trust, the film establishes the tragic inevitability of Frodo's own future. It reveals that no one, not even the most innocent and warm-hearted Hobbit, is immune to the parasitic grip of the Ring. Bilbo's immediate shame and tears after the outburst show his lingering humanity, highlighting the tragic duality of the victim who hates the very thing he desperately craves.■