What is Vacío's real name?
Vacío's real name is Николай Михайлович Васильев.
Nikolai Mikhailovich Vasilyev (Russian: Николай Михайлович Васильев; born 13 February 1998), better known as his stage name Vacío (Russian: Васио), is a Russian rapper.
Source: Wikipedia: Vacío (rapper)
