Biscuit is a Chimæra brought from Lorien to Earth on Lexa's ship. She was rescued from Plum Island by Adam in The Forgotten Ones and named by Sarah Hart in The Revenge of Seven. She is currently under orders by John Smith to protect Daniela Morales and her mother.
- Golden retriever - Biscuit's preferred form
- Tigress - Biscuit transformed into one in The Revenge of Seven.