Since their formation, the members of Sleep Token have remained anonymous. Rich Hobson of Metal Hammer explains that the members, who all wear masks and cloaks, "obscure their faces, they don't talk onstage, and they have only ever done one interview", with that very publication. The lead singer and primary songwriter of the band is known by the moniker "Vessel". Vessel and II are the only members of the band who have been credited as performers on Sleep Token's studio albums. II is also the only member apart from Vessel who has been given songwriting credits.
