|Date of birth||0049|
|Affiliations||TSAB Main Branch Engineering Division|
|Japanese name||マリエル・アテンザ |
|First app.||A's manga (prologue)|
|Voiced by||Kayo Sakata|
Mariel Atenza (マリエル・アテンザ Marieru Atenza), commonly referred to as Mary (マリー Marī), is the head of the precision engineering section of the TSAB Main Branch Engineering Division, who appears briefly in A's and StrikerS and is mentioned in ViVid. She is named for the Mazda Atenza.
Mariel appears briefly in A's, reporting to Amy Limietta (whom she regards as a senpai) that Nanoha Takamachi's Raising Heart and Fate Testarossa's Bardiche are requesting the Belka-type cartridge system. After the main events of the series, she works on making a Device that Hayate Yagami can use.
In Sound Stage XEdit
Notably, she is the only character introduced before StrikerS, who appears in SSX.