Jael, alternatively known as the Silencer, was a Sith of the female persuasion. She belonged to the Infernal Council, which consisted of Sith who had been enslaved by Soa, the Rakata warlord. Jael and the other members of the Council were imprisoned alongside Soa within the Eternity Vault, located on the planet of Belsavis.
The Silencer, Jael, made her initial appearance as an antagonist during the Infernal Council boss fight within the "Eternity Vault" Operation. This operation was featured in Star Wars: The Old Republic, the massively multiplayer online roleplaying video game from BioWare that launched in 2011. Keryha is exclusive to the sixteen-player difficulty settings of the operation.