Ven. Nyanatiloka Mahathera, born as Anton Walther Florus Gueth, was one of the earliest Westerners in modern times to become a Bhikkhu, a fully ordained Buddhist monk.
Nyanatiloka Mahathera
Silacara, Dhammanusari, and Nyanatiloka, Burma, 1907
A bhikkhu is an ordained male in Buddhist monasticism. Male and female monastics are members of the Sangha.
Bhikkhus in Thailand
Tibetan monks
Japanese monks of Jōdo Shinshū, Sōtō, and Shingon Buddhism.
A Cambodian monk in his robes