Netzach is victory, or endurance, depending on which sense of the Hebrew a translator prefers, and the ambiguity is useful: the sphere is about persistence rather than conquest. It is the seventh sephirah, the base of the pillar of mercy, the seat of the emotions, the desires and the instincts in the Golden Dawn reading, and its planet is Venus. Haniel, the grace or favour of God, is its archangel.
In the older material Haniel is thin. He is a name in Agrippa's table of the sephirotic angels and in the tables that descend from it, he turns up in some of the lists of seven, and there is very little narrative attached to him. Compared with Michael, who has scripture and a cult, or Raphael, who has an entire book, he is a position on a diagram.
The last century has changed that considerably. Contemporary angel literature has given Haniel a large and quite specific character, most often as an angel of intuition, of the moon and of feminine cycles, with a body of practice to match. That character is genuinely held and widely taught. It is also new, and it is not what the tables say: the tables say Venus and Netzach.
Readers who meet Haniel first in the modern literature and then go looking for it in Agrippa will not find it, and readers who work from the tables will not recognise the modern description. This collection records the Netzach and Venus attributions because those are what the sources it is built on actually give.