Some interesting facts (Sorry Guys it's just my damn imagination):

1). Name Mic-ha-El means "Who is like El?" ("Who is like God?")
2). The Book of Enoch tell us, that some angels falls in love with mortal women.
3). They had children. A race of hybrids known as the Nephilim.
4). Nephilim sometimes referred to as nefalim and means "fallen ones."
5). Abraham ibn Ezra proposes that they were called fallen ones because of their strange appearance.
6). Shadal understands nephilim as deriving from the Hebrew word "Pele" which means "wondrous".
7). The term might not refer to any specific race or group of people but is a label similar to "hero," a legendary figure, or "great man." The Bible itself describes the Nephilim as "Those were the mighty men who were of old, men of renown." In this view, the Bible tells us that Nephilim is a legendary or heroic figure, a mighty warrior, already renowned in legend by the time Genesis was written. Using the Bible to define itself, Nephilim means a man of legend, one recounted in Legendary Tales.
8 ). They are not historical figures and are ancient imagery with questionable meaning.


Or some facts about Angels:

1). By their nature Angels haven't got bodies. But sometimes they use bodies which we can see or touch. The Bible not tell from where they take those bodies, or where those bodies gone.

2). Angels are genderless. Or have one gender (Male).

3). Angels never dies.

4). Angels are invisible.

5). Angels have feelings.

6). Some Angels looks like animals.