Juvia Lockser began as an S-Class Mage in the Phantom Lord guild, part of its elite Element 4, wielding water-based magic. After Phantom Lord dissolved, she joined Fairy Tail, forging strong bonds within its community. Her past involved profound isolation and emotional detachment, marked by perpetual rain surrounding her—a manifestation of her magic tied to her emotional state. This rain ceased following her defeat by Gray Fullbuster, an event she found beautiful, signaling the start of her emotional change. Originally emotionless and secluded, Juvia developed a markedly happier and more expressive personality within Fairy Tail. She exhibits intense devotion to Gray Fullbuster, persistently referring to him as "Gray-sama" and displaying a romantic fixation. This obsession frequently triggers jealousy, paranoia, and elaborate misunderstandings, particularly toward Lucy Heartfilia, whom she views as a primary rival despite Lucy's disinterest. Juvia speaks of herself in the third person and uses polite honorifics. Core traits include optimism, earnestness, selflessness, and fierce loyalty, alongside impulsivity and a tendency for wild imagination, often fabricating scenarios involving Gray. Despite these quirks, she fights courageously and protects guildmates fiercely, notably performing Unison Raids with Lucy and shielding her from danger. She possesses creative talents like cooking and sewing and adopted Gray's habit of spontaneously shedding clothes by X792. Her appearance evolved over time. Introduced with long, curled azure hair, a navy coat, fur-trimmed shawl, and a teru teru bōzu charm, she later cut her hair and wore more revealing attire upon joining Fairy Tail. Learning of Gray's affection for her Edolas counterpart prompted a return to her original style, replacing the charm with a Fairy Tail emblem. Later attire included a dark knee-high coat with fur trim during the Grand Magic Games and, by X793, a ponytail. Her guild stamp, initially blue above her left thigh, changed to white in X792. As a Water Mage, Juvia generates, controls, and manipulates water for diverse spells such as Water Nebula, Hydro Screw, and Water Jigsaw. Her body can transform into water (Water Form), granting intangibility against physical and magical attacks, underwater mobility, and breathability. This form remains vulnerable to freezing, electrocution, and extreme heat. Strong emotions intensify her magic power—anger amplifies its potency and temperature, even scalding opponents. When physically connected to large water sources like rivers or canals, she can externally control them for combat or utility. She also collaborates tactically with Ice-Make users, allowing them to freeze her liquid form. Emotional distress historically triggered uncontrollable rain, though this diminished after leaving Phantom Lord. Her journey reflects a path from solitude to belonging. Early loneliness and rejection gave way to deep camaraderie within Fairy Tail, where she became selflessly committed to protecting the guild, demonstrated by acts like sacrificing herself against the thunder Lacrima. Her love for Gray evolved from shy stalking to bold, overt expressions, though she flusters at similar attention from others like Lyon Vastia. Cohabitation with Gray by X792 led her to adopt his mannerisms, including involuntary disrobing. She appears in spin-offs such as *Fairy Tail x Rave* and *Fairy Tail: 100 Year Quest*, as well as supplementary media like movies and OVAs. Born with inherent water magic, she did not select her abilities.