Candy Diamond is a character from The King of Fighters series of fighting games. She was first introduced in The King of Fighters 2000 as the player's striker (by selecting Kula Diamond as a striker). When fighting against Kula, Candy will be her striker.
Candy is a robot that was created to be a partner of Kula in her missions. Some personality was built-in her circuit and she and Kula developed sororal feelings for each other.
During The King of Fighters 2000, Kula and Candy went to space to destroy the Zero Cannon. Soon after, while the cannon was destroyed, Kula has falling head-first to Earth, but Candy sacrificed herself to save her beloved sister.
In spite of being a robot, Candy shows some feelings towards Kula.