Friedensreich Hundertwasser was an Austrian artist known for his colorful, organic style that rejected straight lines. Some key facts: - His birth name was Friedrich Stowasser, and "Hundertwasser" means "one hundred waters" in German, reflecting his rejection of straight lines in art and architecture. - He was born in Vienna in 1928 and lived in New Zealand for a time, where he advocated for environmental causes like opposing nuclear energy and pollution. - As an artist, he worked in many mediums but was known for vibrantly colored paintings with spiral and organic shapes to represent life and nature. He also designed buildings that incorporated vegetation and irregular forms.