Liquide "Liquiy" Cole is a minor supporting character in the anime series Kiddy Grade. She works as a receptionist at the headquarters of the Galactic Organization of Trade and Tariffs, commonly known as GOTT, where she shares a workspace with the principal protagonists Éclair and Lumière. Liquide has shoulder-length blonde hair and blue eyes, and she is consistently seen wearing red lipstick and her GOTT receptionist uniform. Her nickname is sometimes spelled as Liquiy, and in the English adaptation she is referred to as Ricki.

Personality-wise, Liquide is friendly, approachable, and supportive. She is good-natured and enjoys socializing, often spending her free time with Éclair and another receptionist colleague named Bonita. Her primary motivation seems to be performing her duties capably while maintaining a warm atmosphere for those around her. She is not an ES member and possesses no superhuman abilities; her role is entirely that of a non-combatant administrative staff member.

In the story, Liquide serves as a grounding presence for Éclair, offering casual friendship and emotional support outside of the high-stakes missions and darker conspiracies that dominate the narrative. She is there for Éclair whenever help is needed, demonstrating loyalty and reliability. Her relationships are centered on her friendship with Éclair, with whom she often hangs out during days off, and her camaraderie with Bonita, with whom she is frequently seen interacting within the GOTT office environment.

Liquide undergoes no significant character development or arc; she remains a steady, dependable figure throughout the series. Her name is derived from the French word for liquid, reflecting the naming pattern of several characters in the show. Her notable abilities are limited to her competence as a receptionist and her capacity for maintaining strong personal connections, rather than any extraordinary powers.