In Hinduism, the gana or bhutagana are attendants of Shiva that reside in chthonic and liminal locations such as cemeteries and charnel grounds.
Etymology
The word Gaṇa (Devanagari: गण), in Sanskrit, means "flock, troop, multitude, number, tribe, series, class" (Monier Williams's dictionary). It can also be used to refer to a "body of attendants" and can refer to "a company, any assemblage or association of men formed for the attainment of the same aims".
Role
Gana are attendants of Shiva and live on Mount Kailash. The story of creation of Virabhadra from the Shiva's lock and destruction of Daksha by Virabhadra and his ganas is a popular myth. Ganesha was chosen as their leader by Shiva, hence Ganesha's title gaṇa-īśa or gaṇa-pati, "lord of the gaṇas".