Daniel and gabriel twins - What does the Bible say about the angel Gabriel?

Daniel 9:21 while I was still praying, Gabriel, the man I had seen in the earlier vision, came to me in swift flight about the time of the evening sacrifice.

For how can this servant of my lord talk with you, my lord? These angels are glorious in their appearance and have great strength as the following description will indicate: Behold a certain man clothed in linen, whose loins were girded with fine gold of Uphaz: His body also was like the beryl, and his face as the appearance of lightning, and his eyes as lamps of fire, and his arms and his feet like in color to polished brass Daniel 10:5-6.