Guru Padmasambhava
Guru Padmasambhava (Skt.) is actually the specific name of one of the Eight Manifestations of Guru Rinpoche. However, the name Padmasambhava now usually refers to the 'general' form of Guru Rinpoche. As one of the Eight Manifestations, Guru Padmasambhava is most often depicted as a pandita wearing monks robes, holding a kapala in his right hand and performing the mudra of argumentation with his left hand.
References
- Phillippe Cornu, Dictionnaire Encyclopédique du Bouddhisme, page 419.