Boris

Boris is a vampire.

History
Boris was born in Russia. When he visited the French court as a powerful Russian ambassador, he was flattered with Laurent's admiration. The two struck a friendship. When it was time for Boris to leave due to the number of vanished serving men and women that was beginning to attract notice, he invited Laurent to go with him, which he accepted.

He became so close to Laurent that he eventually told him about himself. Laurent begged to have the gift of power and immortality for himself. Boris was happy to comply. Over time, Laurent grew tired of his jovial habits and left him to find more powerful vampire groups.

Source

 * Twilight Saga Wiki: Boris