Lucia is a short, well-endowed, beautiful woman with dark blue hair and yellow green eyes. She wears a white buttoned shirt covered by a vest. Along her waist is a white apron and drapes herself with a golden shawl whenever she goes outside or if it gets too cold.
One can see where Elise got her features from, and Lucia's blue hair is slightly bluer than Rean's. Just enough for his hair to look like hers in certain angles and lighting.
She is a loving wife and a devoted mother who really cares for the well being of her family. Towards Elise, Lucia is strict and always encourages her to be the best she can be and to always look forward. However, she is more doting and gentle towards Rean. Despite his situation, she comforts him and lets him know that she is always there for her son. To her husband, she is always by his side, helping him make important decisions and consoles him when things are looking bleak.
While being adverse to violence, she is willing to take up arms to defend her home and loved ones if either are threatened.
The people of Ymir refer to her as a kind woman and is held in high regard, along with her husband.
-Her name, "Lucia", is the feminine form of the name "Lucius", which means "light". This could be an allusion to her positive and nurturing nature, always trying to get people on the right track; a light that helps guide people when they're lost.