Michael Edward "Mikey" Welsh (April 20, 1971 – October 8, 2011) was an American artist and musician, best known as the former bassist of Weezer. He played with Weezer frontman Rivers Cuomo during Cuomo's time in Boston during the hiatus in the band Homie. Following original bassist Matt Sharp's decision to leave Weezer to focus on his group, The Rentals, Welsh was chosen to take over on bass. Welsh played with Weezer from the time that they regrouped in 2000 until August 2001, when he suffered a mental breakdown. Shortly afterwards, he retired from music to focus on his art career. Welsh died on October 8, 2011.