Defeater is an American melodic hardcore band from Massachusetts, formed in 2008. To date they have released five full-length albums, two EPs and three singles. The band lineup consists of Derek Archambault (vocals), Jake Woodruff (guitar), Joe Longobardi (drums) and Mike Poulin (bass). The band's earlier works have been released via Bridge 9 Records, aside from the album Travels, which was initially released via Topshelf Records, but was later reissued on Bridge 9 Records. Their studio album, Letters Home, was released on July 16, 2013, and debuted at number 72 on Billboard Top 200 chart, number 1 on the vinyl chart and number 13 on the Current Alternative Album chart. They released an album in 2015 titled, Abandoned and in 2019 they released their self-titled album, both on Epitaph Records.