Of Mice & Men is an American rock band formed in Costa Mesa, California, in 2009. The band's line-up currently consists of drummer Valentino Arteaga, guitarists Phil Manansala and Alan Ashby, and bassist and lead vocalist Aaron Pauley. The group was founded by former lead vocalist Austin Carlile and former bassist Jaxin Hall in mid-2009 after Carlile's departure from Attack Attack!. Carlile departed from the band in December 2016 citing that a long-term health condition prompted his exit. After Carlile's departure, the band continued to pursue creating music with Pauley as the band's bassist and lead vocalist.

Austin Robert Carlile is an American singer, songwriter and musician from Pensacola, Florida. He achieved prominence as formerly the lead vocalist of Attack Attack! and Of Mice & Men. After leaving Of Mice & Men, he began coaching youth baseball in Costa Rica. A high school athlete, multiple surgeries from Marfan syndrome during his teenage years turned him towards music. In December 2016, Carlile departed from Of Mice & Men due to his Marfan syndrome and the effects that his vocal performances were having on his body.