Jaggox

Fictional History
Jaggox were advanced devices that had the ability to extract the memories from one being, give them the memories of another, and store memories if necessary.

In The Winds of Beyond
In The Winds of Beyond, a jaggox was constructed by Zytanian Tant for use on Kath Volt by King Drall. The memories of Cal Moricas were given to Volt as Volt's were extracted. Drall kept Volt's memories inside Zytanian's jaggox.

In Bluesword's Retribution
In Bluesword's Retribution, Lethran Nakada found Zytanian Tant's jaggox with Kath Volt's memories in them. He used the jaggox as leverage against Kuf Vershal and Faen Noth Borrianna, causing Faen to betray her queen.

In The Battle of Borrianna
Eventually, Lethran Nakada used Tant's jaggox to give back to Cal the Kath Volt memories, making him Volt for the foreseeable future.