The Castle of Dr. Brain is the home of Thaddeus Egghead Brain, the great-great grandson of Dr. Cranium, and it is also the name of a successful video game. It is located high up in the Sierras of California, somewhere near Yosemite, near Coarsegold and the former Sierra Studios. Dr. Brain may have more than one castle, or also have the ability to fly or transport to various places. As his castle or similar ones hav been spotted in the parallel world where the Cerebral Hemisphere is located.