Arakiba

Of the thirteen chiefs of tens, his is the only name that reaches English in a single form — the rest arrive with two spellings or three. What does not arrive at all is any account of what he did after the descent.

Taught how to break enchantments — the counter-spell to Semjaza's spell, and the only Watcher whose art is purely defensive.

Batârêl in Charles, Batraal in the lists that reached English through Greek. Under either spelling he swears the oath on Hermon and does nothing further that the text records.

Three unrelated figures carry this name — a Ugaritic king, the biblical prophet, and this Watcher — and only the coincidence connects them. 1 Enoch records his oath and nothing he taught.

Meteorology is on the charge sheet. He taught men to read the clouds, and 1 Enoch files that beside metalwork and astrology as one of the crimes that brought the flood.

His entire biography as a Watcher is one act: binding himself by the oath on Hermon in 1 Enoch alongside the other chiefs. Yomiel is what the name becomes once the diacritics are dropped, and it is no better attested than the original.