Edmond Hamilton 
Captain Future #24: The Harpers of Titan [EPUB ebook] 

Again Simon Wright, the “Brain, ” lives in a human body, and in that guise contends with the most hideous peril he has ever faced—a menace driving a planet to madness!
The Captain Future saga follows the super-science pulp hero Curt Newton, along with his companions, The Futuremen: Grag the giant robot, Otho the android, and Simon Wright the living brain in a box. Together, they travel the solar system in series of classic pulp adventures, many of which written by the author of The Legion of Super-Heroes, Edmond Hamilton.