Fallen angel
In the Quran, creatures fallen from heaven appear twice. One is Satan (named Iblis in the Quran) and the other is a pair of fallen angels called Harut and Marut. However, Muslims are undecided if these beings are really angels. Some Muslims don't believe that angels could sin, therefore think that angels will never be cast away from heaven. They think that Satan was not an angel himself but only lived among the angels. Harut and Marut are alternatively thought to be kings instead of angels, like the "Sons of Elohim" in Genesis. Others have no worries about the idea of fallen angels. But even if they are fallen, they don't rebel against God for Muslims. The angels are still the servants of God. Iblis and Harut and Marut do not fall together but each are punished for their own sins: