The answer is: Gabriel

Daniel 8:16

In the intricate tapestry of Daniel’s visions, the appearance of Gabriel highlights not just an angel but a unique messenger and interpreter of divine mysteries. Gabriel, whose name means "God is my strength," serves a special role throughout the Bible as a bridge between the divine and humankind. Interestingly, he pops up elsewhere in Scripture—most notably in the announcing of Jesus' birth to Mary in the Gospel of Luke.

In Daniel's prophetic world, the ram symbolizes the Medo-Persian empire, and the goat represents the swift rising power of the Greek Empire famously led by Alexander the Great. The visionary experience enriches our understanding of the rise and fall of empires, reminding us of life's transient nature.

Additionally, there’s an intriguing connection between angelic encounters across various scriptures. Consider how similar interpretations by angels offer context—for instance, in Revelation, other angels guide John with prophetic insight. It's as if God employs heavenly help to ensure His messages reach us in clarity and understanding.

Moreover, the whole vision story underscores a profound theme of hope: despite upheaval and chaos in history, there is divine wisdom at work. The angels aren’t just delivering statements; they are unraveling the fabric of God's plan for humanity, encouraging us to look deeper than the obvious turmoil around us. It invites readers to learn and reflect—a continuous echo of permanence through divine apparatus, reaffirming our knowledge about both ancient empires and timeless truths.