|Maria||Maria of Sasha|
|Voiced by||Minori Chihara|
|First Appearance||Episode 1|
Teresa looks like a nun, as she is usually seen only wearing a nuns gown. She has short, light blond hair that covers her ears, light green eyes, and pale flawless looking skin.
Teresa has a very stoic personality, as her expression doesn't change very often, although she is shown to be very kind, and caring toward her comrades, even willingly get captured just for the sake of her friends. She is also shown to be very shy, as she was embarrassed at the acts she had to perform as a maria.
Teresa Beria is a Serbian Orthodox nun that serves at St. Mihailov in a variety of ordinary chores, such as taking care of children in the school's kindergarten or tending to flowers, she is notable in that, for most of the beginning of the series, she never shows any form of emotion, reacting with fright only when Mafuyu Oribe was about to close a door on her. This is explained when her past is revealed: as a child she was part of a Serbian Orthodox convent in Croatia, during the Yugoslav Wars. Teresa was a jovial and hyperactive girl until the day a group of Croatian militiamen, led by Croa, attacked the convent and pillaged it, slaughtering and raping its occupants in a bloody carnage. The sole survivor, Teresa observed the whole massacre from inside a closet, and when later found, she was so shocked that her emotions were locked away by the trauma. Only when Sasha gave her his support and they both avenged the slaughter by killing Croa, did she manage to smile for the first time in years. Teresa used to offer her Soma to Sasha, but since Ootori's death, she partners with Lizzy. While an ordinary human, Teresa is well-versed in combat, using a bow for long-range attacks or fighting bare-handed, or using blades concealed in her gown. She also has great skills in archery. A running gag involves two curious locks of hair that she has on her head, which look and behave like a puppy's ears, flipping when she is happy or excited, dropping loose when she is embarrassed, and so on.
Powers and AbilitiesEdit
Expert Marksman: Teresa has been shown to be very skilled at archery, being capable to free Hana from her chains, in one shot.
Bow and Arrows: Teresa has a bow and arrow, for her weapon, as she uses them to free Hana, and fight Yuu by herself.
- The little tufts of hair on Teresa move to replicate that of a puppy's ears. When embarrassed, they droop.