Styx (ステュクス Sute~yukusu) is a foreigner associated with the color green, the world of Tetra-Heaven, and the Water Heart attribute. Her covenanter is Yuko.
List of Styx members[]
Level 1[]
- Flying to the Audience, Styx (Foreigner)
- Goddess of the River, Styx (Foreigner)
- Trial and Error, Styx (Foreigner)
Level 2[]
- Cheerful Water Art, Yuko (Tranceunion)
- Delight Shower, Yuko (Tranceunion)
- High-Spirited Tides, Yuko (Tranceunion)
- Something that Cannot be Seen Alone, Yuko (Tranceunion)
- Test Mixing, Yuko (Tranceunion)
- Trial Choice, Yuko (Tranceunion)
Level 3[]
- Delivering a Poem to You, Yuko (Tranceunion)
- Drop of God's Gifts, Yuko (Tranceunion)
- Preparation, Yuko (Tranceunion)
| Character Names | |||||
|---|---|---|---|---|---|
 Yellow |
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| Logicalist/World |  Monolium |
 Disfia |
 Tetra-Heaven |
 Tritomy |
|
| Nina | Aisha ● Liliana | Amor ● Michael | Emerada | ||
| Sena | Lyra | Asura ● Linlin | |||
| Tamaki | Tia ● Nico | "Divine Music" Otohime Xiaolin |
Venus | Cure ● Sigma | |
| Yoshichika | Athena | ||||
 Red |
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| Kurara | Tamakaze ● Narukami | ||||
| Lion | Rosa ● Waffle | Belle | |||
| Mejiko | Albert | Huang-Huang Kidomaru |
Thanatos ● Hypnos | Larva | |
| Veronica | Rhodanthe | Nemesis | |||
| Yoshichika | Hibana ● Rasetsu | ||||
| Yukari | Sandra ● Shiita | "Lotus Fragrance" Sennyo | Quetzie | Aryol ● Salt | |
 Green |
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| Ashley | Jade ● Sherry | Enki | Astraea | Luca ● Sugar | |
| Chloe | Daiga ● Fyrill | Nata Taishi ● Fuko | Valkyrie ● Hermes | Teeb | |
| Olga | Ginei ● Koubu | Lucifer | |||
| Yayoi | Qipao ● Nagi | ||||
| Yuko | Vesta ● Styx | ||||
 Blue |
|||||
| Aoi | Lotta ● Melchi | Brynhildr ● Thor | Arve ● Pino | ||
| Giselle | Yakusa Konohana Sakuya |
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| Mahiro | Selen ● Dread | ||||
| Mana | Wigo ● Rou | Mei ● Sei | Artemis | ||
| Sieghard | Lucia | Megaru | |||
 Luck&Logic Club logicalists |
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| Unne ● Ado ● Endo-san ● Raibu ● Ronri |
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| Colorless | |||||
 You |
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