Vajrapāṇi (from Sanskrit vajra, "thunderbolt" or "diamond" and pāṇi, lit. "in the hand") is one of the earliest bodhisattvas of Mahayana Buddhism. He is the protector and guide of the Buddha, and rose to symbolize the Buddha's power. Vajrapani was used extensively in Buddhist iconography as one of the three protective deities surrounding the Buddha. Each of them symbolizes one of the Buddha's virtues: Manjusri (the manifestation of all the Buddhas' wisdom), Avalokitesvara (the manifestation of all the Buddhas' compassion) and Vajrapani (the manifestation of all the Buddhas' power as well as the power of all 5 Tathagathas). Furthermore, Vajrapani is one of the earliest Dharmapalas and the only Buddhist deity to be mentioned in the Pali Canon as well as be worshiped in the original Zen Buddhism of the Shaolin Temple, Tibetan Buddhism, and even Pure Land Buddhism (where he is known as Mahasthamaprapta and is one of a Triad comprising Amitabha and Avalokiteshwara). Manifestations of Vajrapani can also be found in many Buddhist temples in Japan as Dharma protectors called Nio. Vajrapani is also associated with Acala who is venerated as Fudo-Myo in Japan where he is serenaded as the holder of the Vajra. . Vajrapani is also mentioned in the Vedas as Indra, the king of the Gods and the most widely mentioned deity in all of the Indian scriptures.