Cognates are a pair of Telepaths who work together and have a special, and rare mental connection. They can achieve things that a single Telepath cannot by combining their energy and balancing each other's personality. Cognates are required to share everything with each other and their bond is based on trust; however, it was speculated by Tiergan that the Cognatedom shared by Sophie and Fitz might still be possible even if some secrets are kept from each other, an entirely new approach to Telepathy that could bring on a new level of trust.
The special bond between Cognates is strong but can be broken if the trust between the two is breached. It is very rare for a Telepath to find their desired match, much less achieve Cognatedom because they have to be so open and perfect for each other. It can be very hard to share everything with another person, shown by Sophie in Neverseen, Lodestar, and Nightfall when she hides her crush from Fitz.
Known Cognates
Tiergan and Mr. Forkle tested whether Sophie and Fitz could become cognates by seeing whether Sophie could teach Fitz an impossible telepathic skill, which she could only do. They began their training in Neverseen.
- Alden and Quinlin (previously, before Prentice's memory break)
Alden and Quinlin were previously cognates before they preformed Prentice's memory break. Their connection was broken because Quinlin kept to himself his doubts about preforming the break.
- Mr. Forkle and Mr. Forkle (deceased)
Mr. Forkle and Mr. Forkle shared every memory and secret with each other even before they manifested as Telepaths — when one twin was dying shortly after the events of the Peace Summit at Lumenaria, he used his final moments to share all his memories with the other twin so that there would be "no gaps" in his, or, rather, their memories.