Derek Malone is an unseen character on NBC series Cheers.
Derek is the brother of Sam Malone. He is never seen, but he is said to have golden blonde hair, deep blue eyes, and an operatic voice. He can do trick pool shots, and he tap dances. He is an international lawyer and owns his own plane. He makes Sam feel invisible. Derek falls in love with Diane. Derek teaches Spanish to Coach. Derek is played by man like any other man you would meet in Greek mythology.