noun
A person who entices someone into wrongdoing, especially into a sexual relationship. Can be used for both men and women, though 誘惑者 is gender-neutral; 'temptress' specifically refers to a female seducer.
彼は巧妙な誘惑者で、多くの女性をだました。
He was a cunning seducer who deceived many women.
その小説では、誘惑者が主人公を破滅へと導く。
In that novel, the tempter leads the protagonist to ruin.