Eclair is a female Rex rabbit Sweetspet composed of éclairs. Her light brown base fur features dark brown frosting accents on her ears, arms, legs, and tail, with a pink heart dipped in chocolate adorning her belly. She wears an éclair ribbon bow topped with a pink heart centerpiece on her head and a golden pearl necklace featuring a pink heart charm dipped in pink chocolate.

Originating from Sweetsland, Eclair serves as a chef during the events of the movie focused on Princess Mana's birthday celebration, where her primary responsibility is crafting the princess's birthday cake. Her personality exhibits pronounced self-confidence that escalates into egotism, manifesting as rude behavior towards visiting Jewelpets upon their arrival in Sweetsland, whom she initially deems inferior to Sweetspets.

During the collaborative effort to make Princess Mana's cake, she temporarily apologizes for her conduct and treats the Jewelpets amicably. This reconciliation proves short-lived; after Gumimin consumes the cake, Eclair reverts to her earlier snarky demeanor.

Outside the movie, Eclair appears briefly in episode 38a of *Jewelpet Sunshine*, attending a Christmas party, and later in episode 19 of *Jewelpet Kira☆Deco!*, distributing sweets to stars.