Ood Elder

The Ood Elder was leader of the Ood Disaples, he sent Ood Sigma to sent a telepathic message to the year 2059 to retrieve the Doctor. (DW: The Waters of Mars)

When the Doctor arrived he and the other Ood that where prsent showed the Doctor a vision of The Master this warned the Doctor that the Master was coming. After this the Doctor left to stop the Master. (DW: The End of Time)