There are two total characters. A man and a woman.
The man is on a separate ship, and had left 500-1,000 years before to head to a certain planet. He arrives in orbit and sends a myriad of seeds to the surface. Eventually he goes down and works to fill the planet with animals, and he mines and processes ore and such to prepare for the second ship, which has sleeping colonists.
Over time he dies and is reborn several times.