  Hikari光 Act I Part I, II, III Main (0, 1, V, VS, F, E) Arcaea · Eternal Core · Luminous Sky · Adverse Prelude · Black Fate · Final Verdict · Silent Answer Act I Part I, II, III Main (0, 1, V, VS, F, E) Arcaea · Eternal Core · Luminous Sky · Adverse Prelude · Black Fate · Final Verdict · Silent Answer | |
  Tairitsu対立 Act I Part I, II, III Main (0, 2, V, VS, F, E) Arcaea · Eternal Core · Vicious Labyrinth · Adverse Prelude · Black Fate · Final Verdict · Silent Answer Act I Part I, II, III Main (0, 2, V, VS, F, E) Arcaea · Eternal Core · Vicious Labyrinth · Adverse Prelude · Black Fate · Final Verdict · Silent Answer | |
  Kou紅 Act I Part I Side (4) Crimson Solace Act I Part I Side (4) Crimson Solace | |
  Letheレーテー Act I Part I, Act II Part I Side (5, 18) Ambivalent Vision Act I Part I, Act II Part I Side (5, 18) Ambivalent Vision | |
  Ilithイリス Act I Part III Archive (13) Dark Ambition Act I Part III Archive (13) Dark Ambition | |
  Etoエト Act I Part III Side (10) Binary Enfold Act I Part III Side (10) Binary Enfold | |
  Lunaルナ Act I Part III Side (10) Binary Enfold Act I Part III Side (10) Binary Enfold | |
  Shirabe調 Act I Part II Side (6, 8) Scarlet Cage · Vermillion Shield Act I Part II Side (6, 8) Scarlet Cage · Vermillion Shield | |
  Ayu彩夢 Act I Part III, Act II Part I Archive (11) Colorful Dream Act I Part III, Act II Part I Archive (11) Colorful Dream | |
  Sayaサヤ Act I Part I Side, Act II Part I Main (3, 18) Absolute Reason · Absolute Nihil Act I Part I Side, Act II Part I Main (3, 18) Absolute Reason · Absolute Nihil | |
  Kanae叶永 Act II Part I Side (17) Sunset Radiance Act II Part I Side (17) Sunset Radiance | |
 Siaシア | |
 Aliceアリス Act I Part II Side (7) Ephemeral Page Act I Part II Side (7) Ephemeral Page | |
 Tennielテニエル Act I Part II Side (7) Ephemeral Page Act I Part II Side (7) Ephemeral Page | |
 Mirミール Act I Part II Archive (8) Obsidian Blade · Vermillion Shield Act I Part II Archive (8) Obsidian Blade · Vermillion Shield | |
 Lagrangeラグランジュ Act I Part III Side (9) Esoteric Order Act I Part III Side (9) Esoteric Order | |
 Nami奈実 Act II Part I Archive (14) Astral Sea Act II Part I Archive (14) Astral Sea | |
 Shirahime白姫 Act I Part II Side (S) Divided Heart Act I Part II Side (S) Divided Heart | |
 Vitaヴィータ Act I Part III, Act II Part I Archive (12) Unseeing Eyes Act I Part III, Act II Part I Archive (12) Unseeing Eyes | |
 Amane天々音 | |
  Mayaマヤ Act II Part I, II Main (15, 23) Lasting Eden · Liminal Eclipse Act II Part I, II Main (15, 23) Lasting Eden · Liminal Eclipse | |
 Insight識眼 Lacrymira ラクリミラ Act II Part I Main (16) Severed Eden Act II Part I Main (16) Severed Eden | |
 Ai-chan | |
 Forlorn佗棄 Nell ネール Compassion 慈哀 Act II Part II Main (20) Lucent Historia Act II Part II Main (20) Lucent Historia | |
  Nonokaノノカ Act II Part II Side (21, 22) Extant Anima · Chapter Experientia Act II Part II Side (21, 22) Extant Anima · Chapter Experientia | |
 VIIM | |
 Yuno夢乃 | |
 Helenaヘレナ | |
Arcaea World Arcaea世界 The place where most of the stories take place. It has self-awareness and determines the fate of the girls. | |
Donovan ドノヴァン The expectant husband of Lavinia (Saya) in the story Absolute Reason. | |
 Fansファンス One of Ayu's bats in the story Colorful Dream. | |
 Dremドレム One of Ayu's bats in the story Colorful Dream. | |
 Cedricセドリック Alice's brother before she died in the story Ephemeral Page. | |
 Charonカロン The "satellite" of Lagrange in the story Esoteric Order. | |
Lephon リフォン The god of another world, at the same time the world itself. | |
Faith 信興 The 2nd Seeker of Lephon in the story Lucent Historia. | |
 Codaコーダ Companion Observational Data Automaton 支援型観測自律機 Nonoka's robot in the story Extant Anima. | |
 Mitsukoミツコ Nonoka's friend, a Rank B-Runner in the story Extant Anima. | |