First referenced:
The Desolate Guardians
Additional references - "I think I may have somehow missed the end of the world..."
Heath is an IT systems administrator, currently in control of a network backbone connected to multiple universes via a Quantum Tunnel Transceiver.
Originally trapped in a limited virtual world construct to which he was connected via a direct neural interface, Heath is currently assisting people across multiple universes dealing with the failures and losses of the outer rim universes, and preparing for The Crushing Fist. Through use of the neural interface, he was able to perceive the Soul Reader (Book) directly without suffering immediate and catastrophic brain damage.
Heath's exact physical status is unknown. While he believes himself to be human, connected to the system via a neural interface, he actually exists as a disembodied brain in a medical vat, maintained as part of a complex and adaptive network node. He also has at his disposal two switches, one to release him from his situation through death, the other to wipe or reset his personal memories and leave his skills intact, to allow him to continue to function and help people with his abilities.
Heath has repeatedly had to come to terms in some form with his condition, particularly when required to perform feats that would otherwise be impossible for a normal person. During the destruction of The First World, Heath successfully used his connectivity to the communication networks across the multiverse to simultaneously contact every inhabitant remaining alive, and address them individually by name to tell them not to look at a large Ruby Cube that had escaped from Teskoy Prison. He became more stable however when Conn Thompson talked to him, requesting further help and information.
Whether through his enhancements, or other means, Heath has also made contact with a creature known as a Shadow Entity, which is capable of operating within the minds of people across multiple dimensions.
Heath, or at least the facility housing him is located well within the Outer Shield, somewhere near the Inner Shield but not actually on The First World itself. This provides him with the high level of connectivity required to interface with the internet and systems in each parallel universe.