Of all the citizens of Geodesia, Hal has made the greatest impact on the world and, somehow, managed to remain relatively unknown. It probably helps that no one has seen him in quite awhile.

Hal's technical expertise is about as extensive as you can get. A gloomy air perpetually seems to follow Hal. He has mastered the academic fields of many branchs of science and mathematics. He burns with the fires of rage. Hal has signs of PTSD and is very astute and capable. He can hack into virtually any system. He is hell-bent on achieving his revenge. He has a relatively rigid disposition. He can analyze and get to the bottom of anything.

Hal likes useful things, rocking out to R&B music, and listening to classical music. Still, he has an aversion to spontaneity, sitting through war movies, and reading autobiographical material. Playing Diablo III, watching the next episode of Hotarubi no Mori e, and eating breakfast are routinely a large portion of Hal's normal activities.

Hal is probably best-known for his work on neural computational interfaces that led to animal sentience and, later on, the HG Dynamics Mindchip Initiative. As a teenager, Hal was frustrated with the level of animal cruelty in the world and spent his evenings developing a way to communicate with animals so people would be forced to treat them better. At the time, however, he operated under the illusion that sentience was the issue at hand.

When Hal successfully completed the prototype of his neural interface, he managed to successfully communicate with several animals at a local petting zoo. His success took a turn for the worst, however, when his father (Nashe Gainsworth) carelessly installed the implant in Sherlock Bones, the family dog. Nashe insisted Hal l continue to improve the device to make Sherlock as capable as a human so Hal did. At least, he did until the day Nashe and Sherlock were discovered to be involved in a romantic affair.

Cries of animal abuse echoed throughout the streets and Hal became the guy who helped his dad bang the family dog. During the trial, however, Hal testified against his father and in support of Sherlock's freedom. The courts ultimately ruled that Hal's technology would be seized by the corporate government and Nashe would face no charges.

For at least a decade after the ruling was handed down, Hal refused to speak to his father. The day when he'd have to confront his past would eventually come, however, and his final altrication with his father lead to Mindchip: the greatest technlogical achievement in Geodesian history.