Lucia

Lucia, also known as Χ (Chi), is a mannequin demon created by Arius. She later defected from him and became a member of the Protectors clan, adopted by Matier as her daughter and apprentice to be trained as a Devil Hunter. She later worked alongside Dante to defeat both Arius and Argosax. She appears in Devil May Cry 2 as one of the main protagonists and a playable character. Lucia takes her job as a guardian seriously, being frank and to the point when speaking. However, she possesses a soft and kinder side, as seen as she shows kindness and caring for Matier on multiple occasions, (despite later learning they're not related by blood) and Dante, who she placed her trust into with no objection of any sort.