Ratboy(s) are an American indie rock band from Chicago, Illinois formed in 2010 by Julia Steiner and Dave Sagan. The band consists of Julia Steiner (guitar, vocals), Dave Sagan (guitar), Marcus Nuccio (drums) and Sean Neumann (bass, vocals). Founded by songwriters Julia Steiner and Dave Sagan during their time studying at Notre Dame in South Bend, Indiana, the band relocated back to Sagan's hometown of Chicago in 2015 and released its debut album AOID that same year on Topshelf Records.