Gregory John Puciato is an American musician best known as the former lead vocalist and lyricist of the mathcore band the Dillinger Escape Plan. In addition to being a solo artist, he fronts the band the Black Queen, and is a member of Killer Be Killed, in which he also plays guitar. He also performed alongside Jerry Cantrell from 2019 to 2025, providing backup vocals and lead vocals on Layne Staley-sung songs for Cantrell's solo tours. In early 2023 he co-founded and fronted the metal/hardcore/rock supergroup Better Lovers, before leaving in early 2026. In 2018, Puciato and visual artist Jesse Draxler co-founded the art collective and record label Federal Prisoner.