Maria von Glanzreich holds the title of Queen Mother in the Glanzreich royal family as mother to King Viktor and grandmother to princes Eins, Kai, Bruno, Leonhard, Licht, and princess Adele. She appears as an elderly woman with light blonde hair styled in a bun, featuring a distinctive long strand hanging on the right side of her face, and has blue eyes.

Her personality reflects profound kindness and deep devotion toward her grandchildren, often overlooking their flaws due to intense affection. She constantly worries about their well-being and exhibits emotionally charged reactions to their circumstances, a trait shared by her son Viktor.

In the series' Volume 1, Maria arrives at the palace entrance searching for a tardy tutor. Her presence stuns the guards, and she personally intervenes to welcome Heine Wittgenstein after his initial denial of entry. She sheds tears over potential dangers facing her grandsons and explicitly advocates for their equal treatment.

She maintains clearly established familial bonds, frequently appearing alongside Princess Adele. Historically, the Glanzreich monarchy was abolished by her grandson Leonhard, resulting in the royal family's disbandment, though this occurs long after Maria’s direct involvement.