Character from dark-forest by
Bill Hines's own wife Keiko Yamasuki, revealed in the same press conference as her wallbreaking — the only Wallbreaker the Trisolarans embedded by marriage.
Where the First and Second Wallbreakers are operatives wheeled out for an event, the Third Wallbreaker has been living in her target's house, raising the science with him, falling asleep beside him. Her wallbreaking is therefore the cleanest dismantlement in the project: she does not need to discover Hines's plan, she co-authored it.
Identical to Keiko Yamasuki — see her entry. The 'Wallbreaker' is a role she has held silently inside the marriage for decades.
Also known as: Aristotle (avatar), Keiko Yamasuki