The other named one — and always explaining something, never fighting.
Gabriel appears four times and the pattern is the opposite of Michael's: he interprets. He explains a vision to Daniel, tells Zechariah he will have a son and strikes him dumb for asking how, and tells Mary the same news to her face. He introduces himself once, memorably, as the one who stands in the presence of God — which is the only self-description any angel in the Bible gives.