Quinlan Vos created a holocron, and this particular one was made by Quinlan Vos himself. Oppo Rancisis gifted it to him before the Siege of Saleucami, with the intention that Vos would gain insight by documenting his inner world. Unusually, instead of the typical cubic form of a Jedi holocron, it resembled a pyramidal Sith holocron.
Throughout the campaign on Saleucami and during the Battle of Kashyyyk, Vos carried the holocron with him. Following Order 66, he utilized it to express his affection for Khaleen Hentz. Eight months later, it reached her on Nar Shaddaa. While she was examining it on Kashyyyk, Vos reunited with her there.