Turel is one of the villains from Legacy of Kain: Defiance.
Turel was formerly a Sarafan Inquisitor, who hunted down vampires ordered by Moebius. He is killed by the wraith Raziel, who came from the future. Centuries later, when Kain rises his vampiric empire, he resurrects Turel as one of his lieutenants. Turel, along with Dumah, were the ones who were ordered to throw Raziel into the abyss when he was labeled as a traitor, obeying the order without questioning Kain.
After that, all the vampire clans scattered through Nosgoth. Turel and his clan moved to the Smokestack, a volcanic area. One day, Turel is brought to the past by Azimuth, who keeps Turel in the basement of the Avernus Cathedral. Azimuth and the other members of the Circle of Nine believed him to be a deity known as Hash'Ak'Gik, offering sacrifices to him to avert his wrath. They were being influenced by the Hylden, who used Turel as a vessel to remain outside the Demon Dimension. Turel eventually devolved into a more monstrous form, forgetting much about his past and starting to believe he was really a god.
During the Blood Omen era, Raziel went to Avernus after the Heart of Darkness, wishing to resurrect Janos Audron. He witnesses one of the offering rituals to the Hash'Ak'Gik, led by the necromancer Mortanius. Curious, Raziel approaches the pit, but is suddenly pushed telekinetically, falling into the basement. Turel smells Raziel, and when Raziel demands to know what he is, he recognizes him by his voice, telling he heard that Raziel killed all of his brothers.
Turel tells how he ended in that era, but he is suddenly possessed by the Hylden. He manages to snap out of the possession, but he is too weak to fight against his possessors, so he decides to kill Raziel and use his blood to recover. Raziel tries to fight him, but is unable to harm Turel. When Turel starts to screech, Raziel hits a large metal plate in the wall, hurting Turel's ears, who were very sensitive to noise. With this, he managed to knock Turel and kill him.