Gerald leads research on the ARK
Professor Gerald Robotnik designed the Space Colony ARK. His research into immortality was tied to finding a treatment for his granddaughter Maria's incurable illness.
The history of Shadow's creation, the Space Colony ARK, Maria Robotnik, Gerald Robotnik, Black Doom, the G.U.N. raid, and the consequences that echo through Shadow's later story.

Professor Gerald Robotnik designed the Space Colony ARK. His research into immortality was tied to finding a treatment for his granddaughter Maria's incurable illness.
Maria Robotnik moves to the ARK for treatment, where she lives with Shadow and becomes one of the most important figures in his life.
Black Doom provides his DNA in exchange for help with a planned invasion of Earth fifty years later. That DNA becomes part of the research that produces Shadow.
Gerald creates Shadow aboard the ARK as the Ultimate Life Form.
An ancient combat robot runs out of control and causes major damage aboard the colony, becoming one factor behind G.U.N.'s intervention.
Maria is killed during the incident. Her final wish and memory become central to Shadow's identity and later choices.
Driven by grief, Gerald prepares a revenge plan involving the ARK's systems and Shadow. G.U.N. imprisons Gerald and later executes him.
Shadow is held in a G.U.N. facility until Dr. Eggman awakens him in Sonic Adventure 2.
The Black Arms invasion forces Shadow to confront his connection to Black Doom and Project Shadow before rejecting the forces trying to define him by his past.
Shadow returns to the ARK and encounters Black Doom again. Maria and Gerald appear through the distorted time-space events.
Gerald's work on immortality was connected to his desire to cure Maria's illness. The project later became entangled with Black Doom's bargain and G.U.N.'s intervention.
Gerald Robotnik created Shadow. Black Doom's DNA was part of the process, but Gerald is identified as the scientist who created the Ultimate Life Form.
