Pargrave
From Tardis Wiki, the free Doctor Who reference
Pargrave was captain of the Eschaton. He was in love with Zara, but still mourned his wife's death. He was the sixth son of his family's sixth generation. He was the first person to notice planet Chaos and the Chaos Pool underneath the ship. He knew where to go as he could hear a voice telling him where to go. He was the leader of the voice's freedom fighters. (AUDIO: The Chaos Pool)
Abby was later sent to the Sphere to find Zara. (AUDIO: The Sphere)