Mariel Atenza
Mariel in StrikerS
Character profile
Other namesMary

16 (A's manga)
16 (A's)
26 (StrikerS)
29 (Sound Stage X)
30 (ViVid)

32 (Force)
Date of birth0049
AffiliationAdministrative Bureau
- Technical Division (Reflection)
- Technical Division 4 (StrikerS)
- Riot Force 6 (StrikerS)[1]
OccupationMaintenance Staff (A's)
Technology Officer (Reflection)
Precision-Tech. Ofc. (StrikerS)
QualificationDevice Meister (2nd A's)[2]
Mechanic Meister (StrikerS)
Japanese nameマリエル・アテンザ
(Marieru Atenza)
First app.A's manga (prologue)
Voiced byKayo Sakata

Mariel Atenza (マリエル・アテンザ Marieru Atenza) is a professional Device engineer working for the Administrative Bureau, who mainly appears in A's and StrikerS.


Her family name is presumably a reference to Mazda Atenza.

She is commonly addressed as Mary (マリー Marī), or Mary-san by her younger peers. This is also her name in A's, in which her full name is not revealed.

In A'sEdit

Mary appears briefly in A's as a maintenance staff under Leti Lowran at the Administrative Bureau Main Office, responsible for maintaining equipment of mages.

She reports to Amy Limietta (whom she regards as a senior) that Nanoha Takamachi's Raising Heart and Fate Testarossa's Bardiche are requesting the Belkan cartridge system. After the main events of the series, she works on making a Device that Hayate Yagami can use.

In StrikerSEdit

Mary is now a Precision-Technology Officer (精密技術官) of the Bureau, positioned as the Head of Technical Division 4 (第四技術部) at its Main Office. She also possesses the Mechanic Meister qualification.

She is mentioned briefly in StrikerS manga (ch.3) as the team leader conducting the examination of the very first Relic recovered by the Bureau. She is also responsible for performing Combat Cyborg medical check-ups on Subaru and Ginga Nakajima over recent years.

In StrikerS (ep.14), Mary is seen performing the analysis of Numbers at Battalion 108. She is later seconded to Riot Force 6 alongside Ginga's secondment.

After the main events of the series, she works on preserving and investigating the technologies remained by Jail Scaglietti, as she is familiar with Combat Cyborgs. She is also responsible for performing medical check-ups on the Numbers under rehabilitation.

In Sound Stage XEdit

Mary monitors Ixveria towards the end of Sound Stage X, before the latter falls asleep and is moved to the Saint Church.

Notably, she is the only character introduced before StrikerS appearing in Sound Stage X.

In ViVidEdit

Mary is the person who has constructed Vivio Takamachi's Device, Sacred Heart.

In ForceEdit

In Force (ch.18), Mary is responsible for the strengthening of AEC Armament at the Special Duty Section 6 headquarters. She also appears in an artwork, helping Nanoha to test Fortress.

Alternate continuitiesEdit


Mary appears in The MOVIE 2nd A's and Reflection.

There is no significant change related to Mary between A's and The MOVIE 2nd A's.

In Reflection (summer of 0067), she is a top-class Device Meister, serving as Technology Officer (技術官) at the Bureau Main Office's Technical Division (技術部), and continues to be responsible for the maintenance of Raising Heart and Bardiche. Shario Finieno, a new member of the Bureau, is training under her.

During the incidents at Allston Sea, Mary is mainly responsible for Bardiche's upgrade into Bardiche Hornet.


Mary makes a minor appearance in Gears of Destiny alongside Shamal, right after the healing of Amitie Florian. She also appears in Thoma Avenir's and Lily-Strosek's "flashback" scene of the future.


  1. ^ Secondment in StrikerS (ep.15).
  2. ^ Magical Girl Lyrical Nanoha The MOVIE 2nd A's, BRD Booklet, page 25. Unlike Shario Finieno's case, no rating/grading has been detailed.