Muloki was a Nephite missionary among the Lamanites around 90 B.C., one of the company that labored alongside the sons of Mosiah. He was preaching in the village of Ani-Anti, with Ammah and his brethren, when Aaron left a synagogue that had rejected him and came over to find them there; together they contended with many about the word (Alma 21:11).
When the people of Ani-Anti hardened their hearts, the missionaries went into the land of Middoni, where they preached to many but few believed (Alma 21:12). Muloki, Aaron, and Ammah were taken and cast into prison there (Alma 20:2; 21:13). They were stripped, bound with strong cords, smitten, driven from house to house, and suffered hunger and thirst, and were kept in prison for many days (Alma 20:29-30; 21:14). Ammon and King Lamoni traveled to Middoni, where Lamoni found favor with the local king and the prisoners were brought out, fed, and clothed (Alma 20:28-30; 21:14).
After their release the missionaries went wherever they were led by the Spirit of the Lord, preaching in every synagogue of the Amalekites and in every assembly of the Lamanites where they were admitted (Alma 21:16). They brought many to a knowledge of the truth and convinced many of the traditions of their fathers that were not correct (Alma 21:17).