Elie is the main female protagonist of the story, a young woman whose past is shrouded in complete mystery. She first appears in the town of Hip Hop, where her remarkable luck at gambling has made her a well-known figure in the local casinos. Her primary motivation is to recover her lost memories, as she has no recollection of her life before one year prior to the start of the journey. She does not know her real name, her birthday, or her parents, and she travels in the hope of finding someone who can provide her with these answers. The name "Elie" was self-given, taken from a tattoo on her arm that reads "3173," which she saw upside-down. This tattoo is later revealed to be coordinates that lead to a significant location.

Personality-wise, Elie is a lively, bubbly, and optimistic girl, though she also possesses a notable hot temper that can surface when she is angered. She is often silly or ditzy, but she maintains a positive outlook even when faced with the bleakness of her unknown past and uncertain future. Elie has a well-known fondness for gambling, thanks to her incredible fortune, and she frequently finances the group's travels by winning at casinos. She is also deeply fond of the creature Plue, whom she affectionately but mistakenly believes to be a type of bug. Despite her cheerful exterior, she carries a great sadness related to her lost memories.

In the story, Elie becomes a core member of the Rave Warriors after being saved by Haru Glory. Initially refusing his offer, she eventually accepts his promise to help her find her memories, and the two become partners and close friends. Over the course of their journey, their relationship deepens, and both develop romantic feelings for each other. She also forms strong bonds with other allies, such as the silver-wielding thief Hamrio Musica, creating a support system that helps her mature emotionally.

The central mystery of Elie's character is her connection to Resha Valentine, a legendary dancer from the kingdom of Symphonia who supposedly gave her life fifty years prior to create the holy Rave stones. Elie is identical in appearance to Resha and is later revealed to be Resha herself. The historical account of Resha's death was a staged event, as she was placed into a deep, magical sleep that preserved her youth. She awakened in the present day as Elie when the laboratory where she slept was destroyed. As Resha, she was forced to use her immense power to forge the Rave stones, and she originally came from a village that shares the name Elie.

Elie possesses a power of unparalleled destructive and creative potential known as Etherion, a form of magic capable of transcending space and time. This power is so great that it can turn nothing into something and everything into nothing, and its uncontrolled release could potentially destroy most of the world. Because she cannot initially control this power, it is sealed by Haru to prevent catastrophe. As a fighter, Elie primarily uses a pair of custom Tonfa Blasters, which are tonfas that function as explosive guns capable of firing powerful bullets or magical blasts. After regaining her identity as Resha, she also wields a Space-Time Staff, which allows her to channel Etherion more effectively and has the specific ability to summon or banish the entity known as Endless. Etherion also demonstrates a defensive capability, as it can heal its user from severe injuries such as poisoning. By the end of the story, Elie regains mastery over her powers and her past. Following the final battle, she marries Haru Glory, and they have a son named Levin.