Sandeman

Sandeman is a figure who is often referred to but appears only briefly in the series in a faceless flashback that Max has later in Season 2. He was part of the same ancient cult as Ames White, but when he found that his son wouldn't survive the traditional test, he rejected the cult's beliefs. He then founded and ran Manticore until the government came in and took over. Joshua and Isaac, Joshua's younger brother, were his first creations. He made the transgenics to be immune to the pathogen/virus the cultists were bred to be immune to.

In addition, Sandeman personally created X5-452, also known as Max Guevara, in whom he implanted a message in an ancient language used by the cult, which manifests itself as tattoo-like markings on her skin. Max was created to stop the ancient cult. This is hinted at in early season 2 episodes, as she is said to have no "junk DNA", meaning each base pair of her DNA is encoded with a specific purpose.

It is revealed by C.J. that his father is Sandeman, and that Ames White is his brother.