Joseph Kevin Barry Casey is an American musician based out of Detroit, best known as the lead vocalist and lyricist of post-punk band Protomartyr. He is known for his distinctive vocal style, "anti-charisma[tic]" stage presence, and sardonic, literary lyrics which often incorporate philosophical themes. He is also responsible for creating the band's visual aesthetic.

Protomartyr is an American post-punk band formed in Detroit, Michigan, in 2010. The band consists of Joe Casey (vocals), Greg Ahee (guitar), Alex Leonard (drums), and Scott Davidson (bass). In 2020, Kelley Deal joined the band in a touring capacity, providing additional keyboards, guitar and backing vocals.