The Herod who ruled during the ministry of Jesus was Herod Antipas son of the Herod who tried to kill Jesus as a baby. Although he was king in name he had a few real powers and was merely a puppet of Rome. Like most of his family Herod Antipas was an unstable, violent man, who was superstitious. (Mark 6: 16).
Herod Antipas comes into the story of Jesus at two important points. Herod had John the Baptist arrested and eventually put to death for criticising him for marrying his brothers wife. (Mark 6: 14-29). Jesus refers to him as ‘that fox’ (Luke 13:31,32).
Herod also comes into the story at Jesus’ trial in (Luke 23:6-12) Pilate had offended Herod a year earlier by putting to death some of Herod’s subjects without consulting him. (Luke 31: 1). So he sent Jesus to him as a diplomatic gesture. Herod was delighted as he wanted to see a miracle, but Jesus refused even to speak to him. Herod sent him back to Pilate dressed as a king in order to humiliate Jesus and to antagonise the authorities.