Karl Felix Wilhelm Sandman (born 25 October 1998) is a Swedish singer and actor. He is best known as a member of the boy band FO&O with two studio albums Off the Grid (2014) and FO&O (2017). He plays Sebastian Fagerman in the first Swedish Netflix original series Quicksand, which premiered on 5 April 2019.

Source: Wikipedia (https://en.wikipedia.org/wiki/Felix_Sandman)