Cole Turner was born on January 19, 1885 to Benjamin Coleridge Turner, a human member of the California State Assembly, and a demon mother named Elizabeth. Benjamin was murdered in 1888 kwa Elizabeth, who then took Cole from Earth and raised him in a demon dimension. Cole's demonic side grew up despising his human side for its "weakness", and he became a powerful demon with a reputation as a killer under the name Belthazor. In reality, his human half is an incredibly caring and good person, which makes the suppression of his humanity kwa his demonic half all the zaidi horrible and evil, also later when Cole is possessed kwa the Source, his human half is repressed and corrupted. But his human side is what keeps Phoebe out of danger, from the possession of the Source.

Cole became a member of the Brotherhood of the Thorn, who served the chanzo of All Evil. He made a reputation for himself as an assassin who could kill any witch, an athame being his weapon of choice. Cole was hired kwa the Triad to get close to and kill the Charmed Ones. To do so, Cole returned to Earth in his human guise and was set up as an assistant district attorney in San Francisco.


Agent of the Triad

Cole first meets the Halliwells in the season premiere of Season 3, in which he investigates the attack on the sisters' friend Darryl Morris. Because the sisters witnessed the attack and foiled the assailant, Cole calls the sisters in as witnesses for the man's trial. We don't learn that Cole is a demon until the end of this episode, when Piper freezes the innocents in a courtroom and Cole is immune. He shimmers away and kills the demonic judge who has been assigning guardians to criminals. Within the inayofuata few months, Cole becomes very close to Phoebe and they begin dating. After his first few attempts to assassinate Phoebe and her sisters, he starts protecting them so that his assignment can continue. Eventually he stands up for the sisters and protects them, even though they do not know that Cole and Belthazor are the same person. Cole and Phoebe fall in love.

After much pressure kwa the Triad to finish the job, Belthazor finally employs the spirit of Rage, Andras, to assist him. Andras infects the sisters with rage, causing them to turn on each other, severing the Power of Three. Despite his victory, Cole cannot bring himself to kill Phoebe, and he is exposed as a traitor. Andras possesses Cole, and he is forced to try to destroy the sisters. The sisters manage to regain their powers just in time and successfully fend off Belthazor. Belthazor vanquishes Andras, but is wounded kwa the Charmed Ones, who are able to create a vanquishing potion from Belthazor's flesh. At this point, the Triad attempts to execute Cole for treason. Cole turns on them, supposedly killing them in the process before fleeing back to his apartment to recuperate.

When Phoebe goes to see Cole at his apartment, she finds that Cole is wounded and calls Leo to heal him. Leo tries to heal him but realizes that something is terribly wrong when he finds that he can't heal all of Cole (leading Leo to suspect that Cole is at least part demonic, which Leo then warns Phoebe about).

When Prue and Piper, who are working with a demonic bounty hunter, break in to Cole's apartment, Cole grabs Phoebe and shimmers to the mausoleum, proclaiming his upendo for her, explaining that he was born half human (Cole) and half demon (Belthazor), and that she has awakened his humanity. She initially does not believe him, but when he is wounded kwa the bounty hunter, she decides to defend him. She battles the bounty hunter, but he gains the upper hand. As the bounty hunter is about to kill her from behind, Cole screams "No!" and kills the bounty hunter with an energy ball. He asks Phoebe, "Now do wewe believe me?" Phoebe fakes Cole's death, to keep him from being killed kwa other demons au her sisters, and tells him to run.