The Malachim alphabet is derived from the Hebrew and Greek alphabets. "Malachim" is from Hebrew and means "angels" or "messengers." The Malachim alphabet was offered by Heinrich Cornelius Agrippa during the 16th century C.E. in Book III, Chapter XXX, of his Occult Philosophy. Barrett in his Magus then copied it. Agrippa's only comments regarding this alphabet were that it meant "of Angels or Regal." The Angelic Malachim alphabet is one of the most famous of the Angelic scripts and is still used, to a limited extent, in the higher degrees of Freemasonry.
Malachim is also known as Melachim, which means "of Angels", or Regal; there are also others such as the Celestial Alphabet and Passage Du Fleuve, which they call the Passing through the River alphabet, but in all, the characters and figures are the same. Advanced students, practitioners, and Adepts will find many significant writings in which these figures are used.
Malachim Alphabet - Its Greek and Hebrew Roots
All of the alphabets or Angelic Scripts feature unusual serifs borrowed from Greek and Hebrew characters. Most of the characters are similar to Hebrew. In Celestial, the Aleph is a very simplified version of the Hebrew Aleph. The Chet letter is roughly similar to the Hebrew Shin.
Greek is also equally represented. The Celestial Yod is a simple triangle, similar to the Greek Delta. However, nothing more than a superficial analysis can be made between these alphabets since there is no definitive evidence of where Agrippa derived these alphabets.