|Spin-off(s):||XBlaze – Lost: Memories|
|Japanese voice:||Iori Nomizu|
Strikingly similar in appearance to Celica A. Mercury, the little sister has medium-length brown hair and large brown eyes. She wears a simple pink overall-like dress with a yellow bow that reaches to her thighs over a simple white shirt with pink cuffs. She also wears white socks and black shoes with pink bows on the front.
A little girl who has somehow found her way into the bottom of the Phantom Field. She aspires to be like her sister "Me", and desires to help her. She has a particularly unique idiosyncrasy.
Her real name is unknown, and is only referred to as the little sister.
- Main article: Little sister/Image Gallery
- Little sister looks identical to Celica A. Mercury in her youth. Coincidentally, they also share the same voice actress, Iori Nomizu.
- If the player attempts to name her "Celica", the game will say "After checking the database, you cannot use the inputted name. Sorry…".