Dr. Asuda is the government researcher who single-handedly developed the neurochip used in the Tachikomas' AI and is considered by the Tachikomas to be their father. In the episode "Afternoon of the Machines – PAT," Asuda tries unsuccessfully to defect from Japan, because as a state-funded scientist, he is not allowed to hold patents on his inventions. Following his re-capture, the Tachikoma who is with The Major and Batou asks whether Dr. Asuda is its father. Desiring to leave a record of his achievement, Asuda inserted a trace of himself in the Tachikomas' memory during their reconstruction post-season 1. To prevent another collapse in the AI structural integrity, he decided to delete this last bit of sentimentality.
