Mike Porcaro (born May 29, 1955, South Windsor, Connecticut, USA - died March 15, 2015, Los Angeles, California, USA) was an American bassist perhaps best known for his work with Toto. He eventually succumbed to the disease amyotrophic lateral sclerosis (ALS) also known as Lou Gehrig’s disease. He is the son of Joe Porcaro, brother to Jeff Porcaro and Steve Porcaro.