Blastus was a chamberlain or personal attendant to King Herod Agrippa I in Caesarea. In Acts 12:20, the people of Tyre and Sidon sought his favor as an intermediary to the king, recognizing his influence in the royal household. While the name derives from the Greek word for "shoot" or "sprout," in this context it functions purely as a personal name. The multilingual translations uniformly transliterate the name (Spanish Blástos, French Blaste, German Blastus), with some adding prepositions indicating direction toward him as the object of the diplomatic approach.