Maria Bernhardt is a key character in the series 'Mahou Shoujo Ai'. She is portrayed as a mysterious and imposing figure with a complex personality. Maria serves as an antagonist in the series, often clashing with the protagonist, Ai. Her motivations are driven by a deep-seated desire for power and control, making her a formidable opponent. Despite her antagonistic role, Maria's backstory reveals a tragic past, adding layers to her character. Her interactions with other characters add depth to the storyline, creating a rich narrative tapestry.