An artificial alien-esque girl made by Gore who fights with a Plasma Mace. Luca is Gore's fiancée/assistant and is dedicated solely to him. Even though Luca has a kind and cheerful personality, she also has unusual sadistic tendencies and is naive to the concept of pain and death, killing other people as if it were a game.
Omega will not recognize Luca as "human", sending her into denial about her own existence. When Bilstein tells Luca that she isn't human, Luca's own mind will reach its breaking point and she will unintentionally murder Gore.