| Common Name | Cirrus or Rus |
|---|---|
| Full Name | Cirrus Hyacinth |
| Species | human (skyborn) |
| Gender | male |
| Pronouns | he/him |
| Sexuality | ? |
| Profession | Technological Researcher |
| Organization | Special Expeditions (SPEX) (former) |
| Residence | |
| Appears in | Persephone's Chance |
Dark skin and hair, brown eyes.
Technological researcher from High Gravitas recruited by RP SPEX to investigate how to return Pax Machina to human control. Defected when he learned SPEX intended to use the AI to retake Ambara Down. Fascinated by ancient technology, has a less optimistic attitude than most towards situations.
Brother of Gale Hyacinth.