* CrossdressingVoices:
** KaoriMizuhashi voices Yuuno Scrya. Because of his [[{{Bishounen}} effiminate]] appearance, he is still voiced by her even as an adult.
** Creator/MikakoTakahashi voices Chrono Harlaown until he grows up to an adult.
** Creator/MarinaInoue voices Erio Mondial.
** The ''Lyrical Parties'' have a game called "{{Seiyuu}} Shuffle". For certain scenes, the roles of the seiyuus will be shuffled, which means that every female seiyuu, who participates in those events, could play a boy or a "male" Device. For example, Creator/ChiwaSaito playing Yuuno, Creator/MaiNakahara playing Bardiche, Creator/KanaUeda and Creaotr/YukariTamura playing Chrono. On the other hand, since the franchise have an ImprobablyFemaleCast, [[TheOneGuy the unfortunate one guy]] Creator/KazuyaIchijo played ''[[BadassAdorable Fate]]'' in ''Lyrical Party IV''.
* FanNickname: Has its [[FanNickname/MagicalGirlLyricalNanoha own page.]]
* GenerationXerox: Like her mother Quint, Subaru has a partner and best friend who is female and voiced by Creator/MaiNakahara.
* HeyItsThatVoice:
** Signum started out sounding like a slightly softer [[VideoGame/SuperRobotWarsAlpha Lamia]]. But as ''[=StrikerS=]'' rolls in... she starts sounding exactly like her.
** [[Manga/HayateTheCombatButler Wataru Tachibana]] as Erio.
* RelationshipVoiceActor:
** Chrono's [[Creator/MikakoTakahashi young]] and [[Creator/TomokazuSugita adult]] voices were [[VideoGame/SuperRobotWarsAlpha Kusuha and Bullet]] respectively.
** [[TengenToppaGurrenLagann Simon]] gets to be [[Creator/TetsuyaKakihara Strada]] aka [[Creator/MarinaInoue Erio's]] weapon.
** Some people see romantic potential between [[Creator/MaiNakahara Teana]] and [[Creator/YuuichiNakamura Vice]] (''VisualNovel/{{Clannad}}'', ''Manga/FairyTail'').
* TalkingToHerself:
** Arf shares [[Creator/LaurenLanda the same dub actress]] as young Chrono and they do have some conversations together.
** Nanoha's mother Momoko in the dub shares the same voice as Falin, and has a scene together with her.
** Creator/NanaMizuki voices Fate, Alicia and Levi, three almost identical looking characters with distinct personalities.
** Creator/ShizukaIto voices Shario, Otto and Deed.
** Creator/ChiwaSaito, jarringly enough, voices Subaru, Nove and Quattro.
** Creator/MarinaInoue voices Erio, Cinque and Wendi.
** KaoriMizuhashi voices Yuuno, Vivio and Sein.
** Eriko Kigawa voices Ginga, Uno and Tre. The three have a dialogue in the same scene in ''StrikersSoundStageX''.
** Creator/{{Yukana}} voices Reinforce Zwei and Lucino. Though, it's played straight is other scenes, there is a scene in ''[=StrikerS=]'', where they have chat, but the viewer doesn't hear any dialogue, which is a bit hilarious.
** Creator/NatsukoKuwatani voices Arf, Lutecia, Sette and Auris Gaiz, but this trope is averted.
*** On the other hand, Lutecia lampshades in ''The Movie 2nd A's'' audio commentary that she and Arf have really similar voices and then she tries to imitate her voice (teen and child voice), much to Zafira and Fate's surprise. It's even better, if you listen carefully, Lutecia is only close to imitate Arf's voice perfectly, but there are still subtle distinctions.
** Creator/MaiNakahara voices Teana, Vice's sister Laguna, and Lutecia's mother Megane. Averted.
** Creator/MikakoTakahashi voices the young Chrono and Caro. Completely averted. But played straight with Caro and Friedrich in his baby form.
** Nozomi Masu voices Alto and Dieci. Averted.
** Kayo Sakata voices Mariel and Schach. Averted.
** Creator/AyakoKawasumi voices Ixpellia and the Mariages. Played straight.
** In the [[VideoGame/MagicalGirlLyricalNanoha PSP games]] and accompanying drama [=CDs=] - the three Aces and their Material counterparts, obviously; and every character who meets their Dark Piece doppelgängers. The latter case includes Fate, Reinforce, Vita, Shamal, Zafira, and Chrono. Doing the math, Signum is the only character who averts this trope.
** ''VideoGame/GearsOfDestiny'' also adds Yuuno and Vivio (KaoriMizuhashi), Lily-Strosek and Amitie (Creator/HarukaTomatsu). Thoma and Lily also meet their Dark Piece counterparts, though they actually talk with their partners rather than with their enemies.
*** Averted with U-D and Asteion (Creator/KanaAsumi). [[AndZoidberg And Isis]].
* OneOfUs: Guess what? The creator is a big fan of ''VideoGame/SuperRobotWars''. Considering the general tone of the series, is this really so surprising?
* WordOfGay: Nanoha and Fate at least according to one interview with the creator of the franchise and their voice actresses.

----