Desi Arnaz, Jr. is an American actor and musician, with a net worth of $40 million. Desi Arnaz Jr is the son of entertainers Lucille Ball and Desi Arnaz, and started building his net worth at age 12 as a drummer. Desi was born in Los Angeles, California, in the 1980s he starred in the TV's Automan. He has appeared in hit movies like Billy Two Hats, and Joyride. He and his wife own the Boulder Theatre in Nevada.