Mental As Anything are an Australian new wave and pop rock band that formed in Sydney in 1976. Its most popular line-up was Martin Plaza on vocals and guitar; Reg Mombassa on lead guitar and vocals; his brother Peter "Yoga Dog" O'Doherty on bass guitar and vocals; Wayne de Lisle on drums; and Andrew "Greedy" Smith on vocals, keyboards and harmonica. The group's original hit songs were generated by Mombassa, O'Doherty, Plaza and Smith, either individually or collectively; and it also had success on the Australian charts with covers of songs by Roy Orbison, Elvis Presley, Chuck Berry and Wreckless Eric.