Beliefs concerning angels and jinn

After creating certain creatures from light,

 Allâh Ta'âla concealed them from our sight. 

These creatures are called angels.

 A lot of work has been given to them. 

They never do anything contrary to the orders of Allâh Ta'âla.

 They continue doing whatever work they have been assigned to do.

 Among them, four angels are very famous.

 They are:

 Hadrat Jibra'eel alayhis salâm, Hadrat Mika'eel alayhis salâm, Hadrat Israfeel alayhis salâm, and Hadrat Izra'eel alayhis salâm.

Allâh Ta'âla created certain creatures from fire. 

We cannot see them as well.

 They are called jinn.

 There are all types of jinn; both good and bad.

 They also have children.

 The most famous among them is the accursed Iblis, Shaytân.

Source:Bahishti Zeevar