Lucca is a character from the game Chrono Trigger who appeared in the village of Lahan early in Xenogears. She gives a tutorial about the basics of Xenogear's battle system. Aside from that, nothing is known more about her, except maybe for the presumption that she got blown up along with Lahan when Fei's gear went berserk, but that may not be the case also.

In Chrono Trigger, Lucca is an inventor like her father, Taban. She is the childhood friend of Chrono and is a formidable fighter herself. She is a long range combatant that uses a gun for regular combat and a hammer at close range. She may not be more of a physically strong type of character but her magics and techs make her a dangerous one. Most of her attacks deal fire damage.

Lucca's involvement in Xenogears is due to the fact that Masato Kato, one of the writers of Chrono Trigger and Chrono Cross, was the one who designed the village of Lahan.