Suryaprabha Bodhisattva (Nikkō Bosatsu in Japanese, Ri Guang Pu Sa in Chinese, writing as 日光菩薩), is a bodhisattva whose specialty is sunlight and good health. Nikkō is often seen with Gakkō Bosatsu (Moonlight), as the two siblings serve Yakushi or the Medicine Buddha. Statues of Nikkō and Gakko closely resemble each other and are commonly found together, sometimes flanking temple doors. They are also known in mainland Asia, but as devas rather than bodhisattvas.
He is also known as Ri Gong Ri Guang Pu Sa (The Bright Solar Bodhisattva of the Solar Palace) / Ri Gong Ri Guang Tian Zi (The Bright Solar Prince of the Solar Palace) / Ri Gong Ri Guang Zun Tian Pu Sa (The Greatly Revered Bright Solar Prince of the Solar Palace).