Formerly a thief, Marinia is the second of Celica's four apostles, alongside Ekria, Suri, and Saria.

Her personality is by far the most upbeat and easygoing of the four. Around the mansion, she serves as the family's chef; when assisting Celica in battle, she puts her former thief skills to use, wielding claws and small blades to great effect.

She is implied to have some of Shamara Krupp's memory in her subconsciousness, and is likely to be Shamara's decendent as well as reincarnation.