What is hundertwasser ral name how many times did he change it and why did he change it?

Hundertwasser's real name was Friedrich Stowasser. He changed his name multiple times, ultimately adopting "Hundertwasser" in the 1950s, which means "hundred waters" in German. He chose this name to reflect his artistic philosophy, emphasizing a connection to nature and the environment, as well as to signify his desire to break away from traditional norms and embrace his unique identity as an artist.