"Juvia lives for the ones that she loves! You've got to as well. If you have love in your life, then you must keep on living!"

Juvia Lockser is a Mage of Fairy Tail and is a former S-Class Mage of the now-disbanded Phantom Lord guild where she was a member of its elite team, the Element 4, with her corresponding element being water.

Juvia is a slender, teenage girl with azure blue hair, midnight blue eyes, snow white skin complexion and a curvaceous figure. Juvia is first introduced with long hair, tightly curled at the base, wearing a sapphire blue coat, a cream colored furry trimmed navy blue shawl with a pure white teru teru bōzu attached to it, as well as a matching Russian Cossack hat. Upon becoming a member of Fairy Tail, she cut her long hair and began to wear more revealing clothing. However, after hearing about Gray Surge's crush on her Edolas counterpart, Juvia reverts to her original appearance, with the exception of the teru teru bōzu, instead wearing a Fairy Tail emblem. Juvia's Fairy Tail Guild Stamp is above her left thigh, being blue in color. Her Guild Stamp color later changed to white in X792.

Juvia is first introduced portraying an emotionless face, seeming more secluded from everyone, including members of the Phantom Lord Guild. After she joins Fairy Tail, she develops a happier demeanor. She is obsessed with Gray to the point that her jealousy and paranoia considers anyone who remotely gets close to him a rival even if they show no interest. when Meredy threatened to end him, Juvia loses her calm demeanor and entered a somewhat satanic-appearing state that frightens Meredy and even Erza. Juvia also seems to have a slight masochistic side; upon making a mistake, she asks Gray to spank her as punishment, saying it's her "hobby." She's also very polite towards other, typically addressing others with honorifics, though she addresses Gray as "Gray-sama" only.

She cares deeply for Fairy Tail and its members.