Robert Zero Karl Oskar Broberg (2 July 1940 – 21 July 2015) was a Swedish singer, composer and artist.

[1] As an artist, he used various names: Robban or Robban Broberg (1957–1968), Robert Karl-Oskar Broberg (1968–1974), Zero (1974–1982) and, starting in 1982, Robert Broberg, the name he used until his death.

When Broberg studied at Konstfack in 1957, he claimed that he had a skiffle group and later he was invited to play with his skiffle group at the dance restaurant Lorry in Sundbyberg.

[2] Then he quickly collected friends and they started rehearsing.

[3] He died from Parkinson's disease on 21 July 2015 at the age of 75.