The Gigantes

Eurymedon: Mentioned by Homer[7] as a king of the Giants.

Alcyoneus: One of the strongest of the Giants, along with Porphyrion. Slain by his own grandnephew, Heracles.

Porphyrion: One of the strongest of the Giants, along with Alcyoneus. Referred to by Pindar as king of the Giants.[8] Wounded by his nephew Zeus with lightning bolts and finished off with an arrow by his grandnephew Heracles.

Agrios: Clubbed to death by his three nieces/grandnieces, the Moirai, with clubs of bronze.

Clytius: Immolated by his niece Hecate with flaming torches.[9]
Damysos

Enceladus: Killed by his grandniece, Athena, and buried underneath Mount Etna, like Typhon, on Sicily
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Ephialtes of the Aloadae: Shot by grandnephews Apollo and Heracles with arrows, or inadvertently killed by Otus.

Eurytus: Slain by grandnephew Dionysus with his pine-cone tipped thyrsos.

Gration: Slain by his grandniece, the goddess Artemis with her arrows.

Hippolytus: Slain by his grandnephew Hermes with his sword and wearing the cap of invisibility.

Leon: the lion headed giant slain by Heracles in the giants war

Mimas: Slain by grandnephew Hephaestus with a volley of molten iron, or slain by Ares and robbed of his armor.[10]

Otus of the Aloadae: Shot by grandnephews Apollo and Heracles with arrows, or inadvertently killed by Ephialtes.

Pallas: Killed by grandniece Athena.

Pelorus: Slain by the Olympian Ares.[11]

Polybotes: Crushed by nephew Poseidon beneath the island of Nisyros.
Theodamas

Thoon: Clubbed to death, like Agrios, by his three nieces/grandnieces, the Moirai, with clubs of bronze.

Typhon (pron.: /ˈtaɪfən/; Ancient Greek: Τυφῶν, Tuphōn, [typʰɔ̂ːn]), also Typhoeus (Τυφωεύς, Tuphōeus), Typhaon (Τυφάων, Tuphaōn) or Typhos (Τυφώς, Tuphōs) was the last son of Gaia, fathered by Tartarus, and the most deadly monster of Greek mythology. He was known as the "Father of all monsters"; his wife Echidna was likewise the "Mother of All Monsters."

Typhon was described in pseudo-Apollodorus, Bibliotheke, as the largest and most fearsome of all creatures. His human upper half reached as high as the stars. His hands reached east and west and, instead of a human head, he had a hundred dragon heads; some however depict him as having a human head and the dragon heads being attached to his hands instead of fingers. He was feared even by the mighty gods. His bottom half was gigantic viper coils that could reach the top of his head when stretched out and made a hissing noise. His whole body was covered in wings, and fire flashed from his eyes.

Typhon attempts to destroy Zeus at the will of Gaia, because Zeus had imprisoned the Titans. Typhon overcomes Zeus in their first battle, and tears out Zeus' sinews. However, Hermes recovers the sinews and restores them to Zeus. Typhon is finally defeated by Zeus, who traps him underneath Mount Etna.

Echida- n Greek mythology, Echidna (Ancient Greek: Ἔχιδνα, "she viper") was half woman half snake, known as the "Mother of All Monsters" because most of the monsters in Greek myth were mothered by her. Hesiod's Theogony described her as:

[...] the goddess fierce Echidna who is half a nymph with glancing eyes and fair cheeks, and half again a huge snake,[1] great and awful, with speckled skin, eating raw flesh beneath the secret parts of the holy earth. And there she has a cave deep down under a hollow rock far from the deathless gods and mortal men. There, then, did the gods appoint her a glorious house to dwell in: and she keeps guard in Arima beneath the earth, grim Echidna, a nymph who dies not nor grows old all her days.[2]

According to Apollodorus, Echidna was the daughter of Tartarus and Gaia,[3] while according to Hesiod, either Ceto and Phorcys or Chrysaor and the naiad Callirhoe were her parents.[4] Another account says her parents were Peiras and Styx (according to Pausanias, who did not know who Peiras was aside from her father).[5] Echidna was a drakaina, with the face and torso of a beautiful woman (depicted as winged in archaic vase-paintings) and the body of a serpent, sometimes having two serpent's tails.[6] She is also sometimes described, as Karl Kerenyi noted, in archaic vase-painting, with a pair of echidnas performing sacred rites in a vineyard, while on the opposite side of the vessel, goats were attacking the vines:[7] thus chthonic Echidnae are presented as protectors of the vineyard.

The site of her cave Homer calls "Arima, couch of Typhoeus".[8] When she and her mate attacked the Olympians, Zeus beat them back and punished Typhon by sealing him under Mount Etna. However, Zeus allowed Echidna and her children to live as a challenge to future heroes. Although to Hesiod, she was an immortal and ageless nymph, according to Apollodorus, Echidna used to "carry off passers-by", until she was finally killed where she slept by Argus Panoptes, the hundred-eyed giant.[3]