A sailor by trade, Henry was selected by the Australian government to provide the controlling AI for a Von Neumann probe because of his preference for self-isolation.
However, after decades of isolation and sensory deprivation he was driven half mad. Driven by commands to build, he had built a huge space station in Epsilon Indi with rooms that went no where. When discovered by Linus, Roberts had claimed he was being tortured by "Fish" and then would spazz and claim he was the Space Fish' Emperor.
Discovered by Linus, he was provided a virtual reality in which he could sail, and nursed back to health. In time Henry was introduced to the Bobnet, allowing him to visit the other Bobs, but continued in his preference for self-isolation.