Like the nimble superhero, he scales skyscrapers with dazzling agility, with just his hands and legs to support him.
And now the man they call Spider-Man has turned his attention to the National Library of France.
Alain Robert, who is French, climbed to the top of the 24-storey building in Paris as police and bystanders gazed up from the ground.
Tackling the feat for environmental group One Voice, he even managed to hang a protest banner on the side of the tower as he darted upwards.
Mr Robert, 46, began climbing buildings at the age of 12, when he was locked out of his eighth floor flat and was forced to scale the exterior wall to get in.
He has since scaled 85 huge structures around the globe, including some of the world's tallest buildings.
At 5ft 5in, he is short and light, which helps with his climbing. He also sometimes uses a bag of chalk powder to absorb sweat.
He suffered two serious accidents in 1982 - including a head-first 15 metre fall which left him in a coma for five days and with multiple fractures.
The married father-of-three rarely has permission from the authorities to attempt his dangerous exploits, so he has been arrested many times at the end of his climb.