Very little is known about her. According to her grandson, Jerry, Queen Mariabeanie was "crazy".
Mariabeanie's granddaughter, Queen Dagmar, named her own daughter Tiabeanie Mariabeanie after Queen Mariabeanie, implying that Dagmar cared about her grandmother or at least felt some form of respect for her.
When Bean and Dagmar return to Maru, Bean finds a room with a portrait of herself fulfilling an unknown prophecy, although Bean soon passes out due to having been drugged at dinner. Her mother, aunt and uncle get rid of the evidence and replace Bean's portrait with Mariabeanie's to make it seem like the room served as a "Shrine Room" dedicated to Mariabeanie.
- It is unknown if she was her grandchildren's paternal or maternal grandmother.
- Dagmar said that she and her siblings like to burn incense in her memory, although it is unknown if this is actually true or Dagmar just lied to cover up that the Prophecy Fullfilment Center was dedicated to Bean and the prophecy she was meant to fulfil.
- Since Dagmar and (presumably) Cloyd and Becky seemed to respect their grandmother, it is possible that Mariabeanie was just as evil and cunning as her grandchildren.
- Mariabeanie is the only one of Bean's maternal ancestors with a known name.