Tsugaru Santamaria stands as a bold, agile MMS figure with a bright blue Christmas motif. The EX Weapon Set enhances her silhouette with festive armor, white fur accents, and sharp metallic-blue surfaces that catch light from every angle. The sculpt emphasizes movement, featuring a dynamic stance, flowing cape-like elements, and articulated joints that suggest readiness for battle. Her helmet and accessories carry Santa Claus inspired cues, including a blue hat with white trim and small bell motifs. The paintwork uses crisp lines, subtle weathering on edges, and translucent highlights on weapon parts to evoke a magical winter aura. Overall, she exudes a festive yet combat ready presence.

In the Busou Shinki universe, Tsugaru Santamaria is depicted as a festive guardian who teams up with the MMS squad to defend a winter city from rogue tech spirits and holiday threats. The Santa Claus Blue Xmas variation marks a season of special missions where her standard armor is replaced with frost blue plating and ceremonial decorations that hum with powered energy. She leads with tactical precision, deploying the EX weapon set to unleash ice cold blasts and chime tipped blades. Her backstory suggests a cheerful mentor who inspires younger Shinki to hold onto hope and joy even in the heat of battle.