Vajrasattva has father-mother ( Yab-Yum or Shakti) aspect too. Generally this form is not exhibited in open. It is shown only to those who are initiated in Highest Yoga Tantra. His form is the same as in the single one but his consort carries a kartrika in her right hand and a kapala in her left hand.
Vajrasattva is said to have been originated from seed syllable Hum and is generally invoked for removal of obscuration of conflicting emotions (Kleshavarana) and obstruction to Omniscience (Jneyavarana).