Byscoe was one of two Chimærae who lived with Number Nine. Albeit he never appears in the main series, only being mentioned in The Rise of Nine, he appears in a flashback in Nine's Legacy, and again in The Last Days of Lorien. Byscoe had a sibling, but the other Chimæra is not seen throughout The Last Days of Lorien. It is possible that Sandor made up stories about them defending Nine's family, since Sandor left right before any Mogadorians found his grandfather's campsite.
- Winged Wolf Creature - When Nine is playing in a forest, he sees his Chimærae in this shape.
- Smiling Creature - Sandor encounters Byscoe when he first meets Nine, and is tackled by a smiling, oversized canine.