Origin of Divine species

Daksha's Offspring

Daksha's wife was named Asikli and Asikli gave birth to five thousand sons. They were known as the Haryashvas. The Haryashvas were destined to rule over the world. But the sage Narada went to the Haryashvas and said, "How can you rule over the world if you don't even know what the world looks like? Are you familiar with its geography and its limits? First find out about these things, before you contemplate ruling over the world."

The Haryashvas went off to explore the world and never returned.

Daksha and Asikli then had another thousand sons who were named the Shavalashvas. Narada told them what he had told the Haryashvas and the Shavalashvas also went off to explore the world and never returned.

Narada

Daksha and Asikli were distressed that their children should disappear in this manner. Daksha blamed Narada for the instigation and proposed to kill him. But Brahma intervened and persuaded Daksha to control his anger. This Daksha agreed to do, provided that his conditions were met. "Brahma must marry my daughter Priya," he said. "And Narada must be born as Priya's son."

These conditions were accepted. In fact, Daksha and Asikli had sixty daughters. (Elsewhere, the Brahma Purana mentions fifty daughters.) Ten of these daughters were married to the god

Dharma and thirteen to the sage Kashyapa. Twenty-seven daughters were married to Soma or Chandra. The remaining daughters were married to the sages Arishtanemi, Vahuputra, Angirasa and Krishashva.

Kashyapa with wifes

The ten daughters who were married to the god Dharma( Cronus) were named Arundhati, Vasu, Yami, Lamba, Bhanu, Marutvati, Sankalpa, Muhurta. Sadhya and Vishva. Arundhati's children were the objects (vishaya) of the world. Vasu's children were the eight gods known as the Vasus. Their names were Apa, Dhruva, Soma, Dhara, Salila, Anala, Pratyusha and Dyaus ( Zeus). Prabhasa's son was Vishvakarma. Vishvakarma was skilled in architecture and the making of jewelry. He became the architect of the gods.

Sadhya's children were the gods known as Sadhyadevas and Vishva's children were the gods known as Vishvadervas. The twenty-seven daughters of Daksha who were married to Soma are known as the nakshatras (stars).

As you have already been told, Kashyapa married thirteen of Daksha's daughters. Their names were Aditi, Diti, Danu, Arishta, Surasa, Khasa, Surabhi, Vinata. Tamra, Krodhavasha, Ila, Kadru and Muni.

Aditi's sons were the twelve gods known as the Adityas. Their names were  Shakra. Aryama, Dhata, Vidhata, Tvashta, Pusha, Vivasvana, Savita, Mitra,Varuna, Amsha and Bhaga.

Adityas headed by Indra (Sakra)

Diti's sons were the Daityas. They were named Hiranyaksha and Hiranyakashipu, and amongst their descendants were several other powerful daityas liked Bali and Banasura. Diti also had a daughter named Simhika who was married to a Danava  named Viprachitti. Their offspring's were terrible demons like Vatapi, Namuchi, Ilvala, Maricha and the nivatakavachas.

The hundred sons of Danu came to be known as danavas. The danavas were thus cousins to the daityas and also to the adityas. In the danava line were born demons like the poulamas and kalakeyas.

Arishta's sons were the gandharvas (singers of heaven). Surasa gave birth to the snakes (sarpa). Khasa's children were the yakshas (demi-gods who were the companions of Kubera, the god of wealth) and the rakshasas (demons). 

Vinata had two sons named Aruna and Garuda. Garuda became the king of the birds. 

Krodhavasha had fourteen thousand children known as nagas (snakes).. Kadru's sons were also known as nagas or snakes. Among the more important of Kadru's sons were Ananta, Vasuki, Takshaka and Nahusha.

Muni gave birth to the apsaras (dancers of heaven).

The Vasus, Adithyas, Daityas, Danavas and many similar beings constituted the Asura Or Titans.

Later the beings following Dharma( Justice) were called Devas and the others remained Asuras.

Lord Vayu

HERE WE ARE TALKING ABOUT DIVINE OR SEMI DIVINE BEINGSTo know more about the origin of Earthly beings follow the link below

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In the Brihadaranyaka Upanishad the Rishi Yajnavalkya at one stage says “The eight Vasus, eleven Rudras, twelve Adityas, Indra and Prajapati are the thirty-three gods".

VASUS :

They are eight elemental gods (called "Aṣṭa-vasu", 'Eight Vasus') representing aspects of nature, representing cosmic natural phenomenon. The name Vasu means 'Dweller' or 'Dwelling'. Their origin is mysterious and different in different Mythologies. This set of Gods have similarities with the Greek deities. In the Ramayana the Vasus are children of the sage Kashyapa by Aditi and so are full siblings to the Adityas. However the Mahabharata makes them sons of Prajāpati son of Manu son of Brahma. According to Greek Mythology, Uranus is the King of the first generation Titans ( Asuras). The Uranus's parents are Aether, a Light God and  Nyx. Aether's  father is  Erebus, a deity representing darkness and his father was Chaos, God of Air and his father was a Chronus ( not Cronus). Chronus is the deity of TIME, and his father was Hydrus. God of celestial waters. From Hydrus was Gaia( Mud ) formed. Puranas also talks of generation of celestial water on which Lord Vishnu slept at the beginning of creation. The Greek Mythology also talks about the Golden egg which is also refered in Puranas as HiranyaGarbha. The Puranas tell that Brahma, the creator was born out of a world egg which raised from the celestial waters were Vishnu slept. PHANES was the primal generator of life, the driving force behind reproduction in the early cosmos. Phanes was hatched from the world egg (the primordial mixture of elements) . Puranas also say that the world egg is a combination of all basic elements needed to create the cosmos . Lord Phanes can be similar to Lord Prajapati, who said to be born out of the Hiranyagarbha or world egg at the beginning of creation.
It has been argued that the name of /PRA-JĀ[N]-pati/ ('progeny-potentate') is etymologically equivalent to that of the oracular god /prōtogonos / ( Phanes).

Brahma, the creator

 Later Prajapati was identified with Brahma. As Lord Phanes had four head just like Lord Brahma and was creator of all. Lord Phanes was the first king of the universe, who passed the royal sceptre on to his daughter Nyx (Night),who in turn handed it down to her son Ouranos (Uranus). From him it was first seized by Cronos , and then by Zeus ( Dyaus).They were the most powerful set of Gods during that age.

Lord Dyaus ( Zeus )

The three most powerful gods in all of Olympus:  Zeus, Lord of the Sky, Poseidon, Lord of the Seas, and Hades, Lord of the Underworld. In the beginning, after they had defeated their father, Cronos, they drew lots to see who would get where as their domain.

Poseidon

 Poseidon got the ocean, Hades got the Underworld and Zeus got the sky. Zeus retains control over the sky and the weather, Poseidon can manipulate water, storms, and earthquakes, Hades can summon undead, control shadows, and use earth-related disasters.

Hades

Connection with Egyptain GODS

Typhon started destroying cities and hurling mountains in a fit of rage. With the exception of Zeus, Dionysus, and Athena, the gods of Olympus fled from their home to Egypt, where they hid themselves by taking the forms of various animals. When Athena accused Zeus of cowardice, he regained his courage and attacked the monster. The battle raged, ending when Zeus threw one hundred well aimed lightning bolts on top of Typhon, trapping him.

The inveterate enemy of the Olympian gods is described in detail by Hesiod as a vast grisly monster with a hundred serpent heads "with dark flickering tongues" flashing fire from their eyes and a din of voices and a hundred serpents for legs, a feature shared by many primal monsters of Greek myth that extend in serpentine or scaly coils from the waist down. The titanic struggle created earthquakes and tsunami. Once conquered by Zeus' thunderbolts, Typhon was either cast into Tartarus.

Dyaus battle Typhon

"the gods of Olympus fled from their home to Egypt, where they hid themselves by taking the forms of various animals".... This itself is the answer to the questions why the Gods of Ancient Egypt are half bird or animal. In Egyptain stories we see animal human hybrid which may have been created as part of an experiment to fight the Typhon. 

ADITHYAS

In the Rigveda, the Ādityas are the seven celestial deities, sons of Āditi and Kashyapa.

Varuna
Mitra
Aryaman
Bhaga
Anśa or Aṃśa
Dhatri
Indra
Vayu (Mārtanda)

Lord Indra

The Adithyas are headed by Lord Indra. The titles of the seven great sages (saptarshi) as well as the tile of Indra change from manvantara to manvantara. The gods also change.
In the present vaivasvata manvantara, the seven great sages are Atri, Vashishtha, Kashyapa, Goutama, Bharadvaja, Vishvamitra and Jamadagni. The gods now are the sadhyas, the rudras, the vishwadevas, the vasus, the maruts, the adityas and the two ashvinis. 

Indra must have gained supiriority by slaying Vritra.

The Epic Battle between Lord Indra and Vritra 

Vritra and Indra battle ( Vritra represented as a huge Asura)

 Vritra kept the waters of the world captive by building some barriers in all water outlets to humans forming huge dams. Vritras may be a race of dragon, snake like beings among whom Vritraasura was the king.The combat began when Indra was young, and he had drunk a large volume of Soma at Tvashtri's house to empower him before facing Vritra. Tvashtri fashioned the  Vajrayudha for Indra from the bones of Dadidichi, and Vishnu, when asked to do so by Indra, made space for the battle by taking the three great strides for which Vishnu became famous. Vritra was killed by Indra, who destroyed all the 99 Dams of Vritra , liberating the imprisoned rivers. 

Vritra represented as a snake ( Dragon like being)

For this feat, Indra became known as Vritrahan "slayer of Vritra". This story is based on vedas, there are many other versions of this same story.

To know about the generations of asura...

World of Asuras

Lord Agni

RUDRAS

THE ORIGIN OF ELEVEN RUDRAS

Once, the deities went to sage Kashyapa after being tormented by the demons. They complained to him about the misdeeds of the demons, who also happened to be their step brothers. Sage Kashyapa became extremely furious, when he heard about the misdeeds of his sons - the demons. To protect the deities from his sons, he commenced a penance to please lord Shiva.
Lord Shiva became very pleased by his penance and appeared before him. He asked Kashyapa to demand anything he wished. Kashyapa then requested Lord Shiva to take birth as his son and destroy the demons. Lord Shiva blessed him and said - 'So be it'.
Lord Shiva, later on took birth as eleven Rudras from the womb of his wife Surabhi. The name of these eleven rudras were as follows:-

1) Kapali, 2) Pingal, 3) Bheem, 4) Virupaksha, 5) Vilohit, 6) Shastra, 7) Ajapad, 8)Ahirbudhnya, 9) Shambhu, 10) Chand and 11) Bhav.
These eleven Rudras fought battles with the demons and killed them. The deities were relieved after the death of the demons. They worshipped these eleven rudras to express their gratitude and indebtedness.

In a different context, Brahma meditates on Shiva and as a result Shiva is born as Rudra to Brahma. The Rudras are born directly from the body of Rudra. Rudra is the material representation of the almighty Shiv.( The male form of Paramthman ).Some of them were white and gentle; while others were dark and fierce.

The Matsya Purana mentions the ferocious eleven Rudras – named Kapali, Pingala, Bhima, Virupaksa, Vilohita, Ajesha, Shasana, Shasta, Shambhu, Chanda and Dhruva – aiding God Vishnu in his fight against the demons. They wear lion-skins, matted-hair and serpents around their necks. They have yellow throats, hold tridents and skulls and have the crescent moon on their foreheads.