Robert Edward Casale Jr., or "Bob 2", was an American musician, composer and record producer. He came to prominence in the late 1970s as the rhythm guitarist and keyboardist of the new wave band Devo, which released a Top 20 hit in 1980 with the single "Whip It". The band has maintained a cult following throughout its existence. He was the younger brother of their co-founder and bass guitarist Gerald Casale.