Éclaire is a Rex rabbit Sweetspet composed of éclairs, originating from Sweetsland. She displays light brown base fur with dark brown frosting accents along her ears, limbs, and tail. A pink chocolate-dipped heart adorns her belly. Her attire features an éclair ribbon bow with a central pink heart on her head and a golden pearl necklace bearing a pink chocolate heart pendant.

In *Jewelpet Sunshine*, Éclaire appears briefly during a Christmas celebration in episode 38a. She resurfaces in *Jewelpet Kira☆Deco!* episode 19, distributing sweets among stars. Her most prominent role occurs in *Jewelpet the Movie: Sweets Dance Princess*, where she undertakes crafting Princess Mana's birthday cake.

Éclaire exhibits pronounced self-confidence bordering on arrogance. When Jewelpets arrive in Sweetsland, she greets them with overt rudeness, deeming them inferior to Sweetspets. This behavior shifts when collaboration becomes essential for the cake's preparation; she offers an apology and works alongside them. After Gumimin consumes the cake, she discards the alliance and reverts to her dismissive demeanor.