Gretchen's mute half-sister who suffers seizures from a mysterious shriek. Revealed to be a cuckoo implant raised in a human surrogate, she uses her powerful shriek to disorient their enemies, enabling her and Gretchen's escape.
Gretchen's protective bond with her half-sister drives the climax as she fights to save her.
The hooded woman is Alma's biological mother from a near-human species.
Explore the full interactive character relationship map of Cuckoo