It is very interesting to see robots assisting brain surgery, and it is rewarding to see how much meticulous design and effort is required to properly implement it. By understanding the equipment with many complex functions and applying limited production methods, we were able to achieve results that met our expectations and goals. The Geniant Cranial supports high-precision surgeries such as deep brain electroencephalography (sEEG) to detect seizure sites in intractable epilepsy surgery, deep brain stimulation (DBS) for Parkinson's disease treatment, and brain tumor biopsies. The surgical guide robot and navigation support precise positioning and real-time tracking to accurately and intuitively guide the medical staff to the surgical location. The initial design was based on making most of the parts using 3D printing, but after it was realized that 3D printing results could not be used due to the limitations of medical equipment, the design was changed to one that could be made entirely using sheet metal and bending. Rereceived US FDA certification in January and won the 'Best of the Best' award at the '2025 Red Dot Design Award' for surgical environments.