Maria is a professional agent representing the corporation affiliated with A-class racer Natsuo Sawai. She manages public relations and technical disclosures for her employer. Her background directly links her to the corporate structure overseeing Formula X racing operations.

Maria's key narrative function involves confronting Makoto's team regarding the engine supplied by Gou. She reveals Gou's prior employment with her corporation and formally declares the engine defective based on corporate analysis. This intervention confirms her role in protecting her client's technical and competitive standing.

During the Open Cup race, Maria actively supports Natsuo Sawai from the pit area. Her presence throughout the competition highlights her professional dedication to managing the racer's corporate and competitive interests. She demonstrates assertiveness in defending her employer's stance on the engine's specifications and performance.

Maria's development remains centered on her professional duties. Her actions consistently reflect her corporate responsibilities. Her interactions primarily propel the conflict surrounding the engine's legitimacy and the corporate dynamics within the racing series. Her narrative arc is confined to this single appearance within the OVA, defined entirely by her corporate affiliation and professional obligations.