The abilities and physical features of angels are widely varied and many seem able to alter their appearance at will, but most favor beautiful humanoid forms with large, birdlike wings growing from their backs. They are immortal and do not age. Most angels seem to have varying degrees of superhuman strength, and they often can fire bolts of heavenly fire from their hands or summon burning swords at will. They can make themselves invisible to humans, although rare sensitives may still see them. Many angels can generate illusions and compel humans to obey their will, and some can resurrect the dead by sharing their own divine essence with the deceased.
According to Azazel, the Cheyarafim are a group of angel-like mutants who were the traditional enemies of the Neyaphem, a demonic-looking group of mutants who lived in Biblical times. The Cheyarafim were fanatics who had a strict, black-and-white view of morality which led them into conflict with the Neyaphem. This escalated into a holy war, causing the Neyaphem to either flee or be exiled into an alternate dimension.
The ultimate fate of the Cheyarafim has not been revealed. There are no known Cheyarafim groups extant. It has been implied, but not confirmed in canon, that some existing mutant characters may be descended from Cheyarafim; For instance, Archangel and Icarus both have fully feathered wings on their backs and a blood-based healing factor, of which Archangel's is discovered to burn instead of healing the Neyaphem-born Nightcrawler. This would suggest that the Cheyarafim died out or were assimilated into the normal human gene pool.