Red Velvet - IRENE & SEULGI

Red Velvet - Irene & Seulgi is the first sub-unit of Red Velvet, consisting of Irene and Seulgi. They made their debut on the 6th of July, 2020, with the mini album Monster. They were originally set to debut in June 15, 2020, but it was delayed to sometime in July. It was explained that SM Entertainment judged that the album needed additional production in order to achieve a higher quality of music.