So, let's look at the Peris based from what Blavatsky had stated: "Peri (Persian: پری, plural پريان pariān), otherwise known as Pari in Persian culture, are exquisite, winged spirits renowned for their beauty. Originally from Persian mythology, Paris were later adopted by other cultures. They are described as mischievous beings that have been denied entry to paradise until they have completed penance for atonement. Under Islamic influence, Peris became benevolent spirits, in contrast to the mischievous jinn and divs."
In Persian mythology and literature: "Paris are detailed in Persianate folklore and poetry, appearing in romances and epics. Furthermore, later poets use the term to designate a beautiful woman and to illustrate her qualities. At the start of Ferdowsi's epic poem Shahnameh, "The Book of Kings", the divinity Sorush appears in the form of a pari to warn Keyumars (the mythological first man and shah of the world) and his son Siamak of the threats posed by the destructive Ahriman. Paris also form part of the mythological army that Kaiumers eventually draws up to defeat Ahriman and his demonic son."
"In the Rostam and Sohrab section of the poem, Rostam's paramour, the princess Tahmina, is referred to as "pari-faced" (since she is wearing a veil, the term pari may include a secondary meaning of disguise or being hidden[dubious – discuss]). Paris were the target of a lower level of evil beings called دیوسان divs (دَيۋَ daeva), who persecuted them by locking them in iron cages. This persecution was brought about by, as the divs perceived it, the paris' lack of sufficient self-esteem to join the rebellion against perversion."
Islamic culture: "With the spread of Islam through Persia, the pari (or peri in Turkish) was integrated into Islamic folklore. Early Persian translations of the Quran, identified the good jinn as peris, and the evil ones with divs. The belief in Pari still persist among Muslims in India as a type of spiritual creature besides the jinn, shayatin and the ghosts of the wicked. Turkish Muslims often accept the existence of paris among other creatures, such as jinn, ifrit (ghosts or demons of hell), nakir, div (ogres or fiends) and shayatin (demons or devils). According to the Persian exegesis of the Qurʼan Tafsir al-Tabari, the paris are beautiful female spirits created by God after the vicious divs. They mostly believe in God and are benevolent to mankind."
"They are still part of some folklore and accordingly they appear to humans, sometimes punishing hunters in the mountains who are disrespectful or waste resources, or even abducting young humans for their social events. Encounters with paris are held to be physical as well as psychological. Marriage, although possible, is considered undue in Islamic lore. Because of humans impatience and distrust, relationship between humans and paris will break up. Bilqis is, according to one narrative, the daughter of such a failed relationship between a pari and a human."
Then on the Devs: "Div or dev (Persian: Dīv: دیو) are monstrous creatures within Middle Eastern lore. They have their origin in Persian mythology and spread to surrounding cultures including Armenia, Turkic countries and Albania. Although they are not explicitly mentioned within canonical Islamic scriptures, their existence was well accepted by most Muslims just like that of other supernatural creatures."
"They are described as having a body like that of a human, only of gigantic size, with two horns upon their heads and teeth like the tusks of a boar. Powerful, cruel and cold-hearted they have a particular relish for the taste of human flesh. Some use only primitive weapons, such as stones : others, more sophisticated, are equipped like warriors, wearing armour and using weapons of metal. Despite their uncouth appearance - and in addition to their great physical strength - many are also masters of sorcery, capable of overcoming their enemies by magic and afflicting them with nightmares. Their origin is disputed, although it may lie in the Vedic deities (devas) who were later demonized in Persian religion (see daeva)."
"In Ferdowsi's tenth-century Shahnameh, they are already the evil entities endowed with roughly human shape and supernatural powers familiar from later folklore, in which the Divs are described as ugly demons with supernatural strength and power, who, nonetheless, may sometimes be subdued and forced to do the bidding of a sorcerer."
Legends: "Div appear throughout many supernatural legends as villains, sorcerers, monsters, ogres or even helpers of the protagonist. It is usually necessary to overcome the Div, to get his aid. After defeating the Div, one must attach a horseshoe, a needle or an iron ring on his body to enslave them. On the other hand, a Div can not be killed by physical combat, even if their body parts are cut off. Instead, it is required to find the object storing the soul of the Div. After the object is destroyed, the Div is said to disappear in smoke or thin air. The notion of a demon tied to a physical object, later inspired the European genie."
"According to pre-historic Persian legends, the Divs once roamed the earth until Zoraster chased them away to the underground. Since when, they do not appear visible on earth again and live secretly in the underworld. Such legends have later been assimilated to Islamic legends, according to which the jinn lived on earth prior to humans, but have been chased away. However, here the heroic human is replaced by a group of angels. Accordingly, Div have been entrusted to govern the earth 70,000 years before the creation of the first human."
"However, God created between the Div and human, the jinn (taken from Islamic lore), ruled by Jann ibn Jann. However, when Jann ibn Jann challenged the heavens, Satan (Iblis) was sent with an army of angels to overthrow him. During this battle some treacherous Divs joined Satan and the angels. Again, at the end, the story assigns them to the underworld regions of hell, when the Divs follow Iblis' refusal to pay homage to the first human."
"In Kisekbasch Destani ("Story of the cut head"), a Turkish Sufi legend from the 13. or 14. Century, Ali encounters a beheaded men, whose head is still reciting the Quran. His wife has been captured and his child been devoured by a Div. Ali descends to the underworld to kill the Div. Here, he finds out, the Div further captured 500 Sunnites and the Div threats Ali, to destroy the holy cities of Mecca and Medina and destroy the legacy of Islam. After a battle, Ali manages to kill the Div, release the inmates, saves the devoured child and brings the severed head, with aid of Muhammad back to life."
So, based from the descriptions stated above, shows that "They are described as having a body like that of a human, only of gigantic size, with two horns upon their heads and teeth like the tusks of a boar. Powerful, cruel and cold-hearted they have a particular relish for the taste of human flesh. Some use only primitive weapons, such as stones and others, more sophisticated, are equipped like warriors, wearing armour and using weapons of metal. Despite their uncouth appearance - and in addition to their great physical strength - many are also masters of sorcery, capable of overcoming their enemies by magic and afflicting them with nightmares."
It's interesting that based on the "Divs" states that they once roamed the Earth until Zoraster drove them underground. Then states that "Jann ibn Jann" had challenged Heaven and God had sent Iblis with the Angels to battle against them. This is the story of Agni battling the Dragon God, and the Divs that once roamed all over the Earth were driven underground by Iblis who is Michael the Archangel.