Who was the famous advisor of the great Chandragupta Maurya, who became a legendry figure owing to his books.

Chanakya (also spelled Kautilya or Vishnugupta) was the legendary advisor to Chandragupta Maurya and author of the Arthashastra, a foundational text on statecraft and economics. He was instrumental in establishing the Mauryan Empire. Samudragupta was a later Gupta emperor, while 'Rakshas' and 'Samukha' are not historical advisor names.