READING ACTS: Who is the Angel Metatron?. Past posts in the series on the ancient books of Enoch, plus on related matters, are noted here and links.
Incidentally, the OTP translator of 3 Enoch is Philip Alexander, not Anderson. I have a couple of old essays that deals with the archangel Metatron here (introductory) and here. They were published in revised form as a single article here. And for much, much more on Metatron in popular culture, run "Archangel Metatron Watch" through the PaleoJudaica search engine.