When eighteen-year-old Felix Dzerzhinsky joined the revolutionary movement in 1895, he chose the pseudonym “Astronomer” as an underground nickname. When he died in 1926, friends and enemies respectfully called him “Iron Felix.” For some, he was the “first Cheka” who created the Cheka and the organizer of the Red Terror. For others, he was an “ascetic knight of the revolution,” who revived the Russian economy after the First World War and the Civil War, and fought against corruption and homelessness. Who was he really? And after whom were 1342 urban objects of Russia, squares, streets, avenues and alleys named?