Laetitia is a Frame Arms Girl, a line of model kit figurines that comes to life in the anime series 'Frame Arms Girl'. She is a prototype model equipped with advanced AI capable of self-awareness and learning. Laetitia is characterized by her kind and gentle demeanor, often acting as a mediator among her fellow Frame Arms Girls. Her role in the series involves supporting the main character, Ao Gennai, and helping her understand the world of Frame Arms Girls while fostering friendships with other models in the series.