"DayWalker" (stylized as "DAYWALKER!") is a song by American musician Machine Gun Kelly featuring Corpse Husband that was released on March 12, 2021. It is a trap metal and techno-punk song produced by Kelly, BazeXX, and SlimXX with additional writing credit by Corpse Husband. Music video co-directed by Kelly and Sam Cahill was published on March 18, and it features Kelly fighting with another man and Valkyrae portraying Corpse Husband. The song achieved moderate commercial success, charting at number 53 in the UK, and 88 in the US, becoming Corpse's first entry on the Billboard Hot 100.