Shavaripa
Shavaripa was an Indian Mahasiddha who figures prominently in the early lineage of the Mahamudra transmission. Nothing much is known about him. Apparently he was a hunter who was dissuaded from his evil livelihood by Avalokiteshvara himself. The Bodhisattva appeared to him and boasted of being the better hunter of the two. He challenged Shavaripa to a competition and said he could kill 100 animals (which were his own emanations) by shooting a single arrow, which he proceeded to do. Shavaripa could not compete. Avalokiteshvara then showed Shavaripa the hell reamls in which he would be reborn in the future. Terrified, Shavaripa abandoned hunting altogether.
He later met the Mahasiddha Saraha and the incomparable Nagarjuna, from whom he received Mahamudra instructions. He practiced these and attained complete realization. Shavaripa then passed these instructions on to his disciple Maitripa, who passed them on to the Tibetan translator Marpa. He was also an important early lineage master in the transmission of the practices of the Six-armed Mahakala which were then passed from Maitripa to Khedrub Khyungpo Naljor, the founder of the Shangpa Kagyu tradition. Another special transmission of his is that of the Six Yogas of the Kalacakra tradition, the so-called "Six-limbed Vajra Yoga" or simply "Six Vajra Yogas" (Skt. ṣaḍañga-yoga). Over the centuries he appeared at crucial times to various masters and transmitted these teachings to them.