Avalokiteshvara is one who refuses to accept Nirvana since he considers such acceptance selfish in view of the ignorance of the great majority of the people who have not yet attained that stage.
Chakrasamvara also known as Samvara, is also a Tantric deity of the Supreme Yoga Tantra or Vajrayana. Here Chakrasamvara is depicted with 12 arms embracing his consort Vajravarahi.
Hayagriva is also one of the main archetype deities of the Nyingma Order. Hayagriva is one of the emanations of Bodhisattva Avalokiteshvara in terrific form.