Admetos was the king of Pherai in southeastern Thessaly. Admetos was slated to die soon after the Quest for the Golden Fleece was over but his wife Queen Alkestis volunteered to die in his place. Herakles persuaded Thanatos [Death] to spare Alkestis because of her selfless devotion to her husband.
Aithalides was the son of the messenger god Hermes and Eupolemeia. Because of his indelible memory, Aithalides was the herald of the Argonauts.
Akastos was the son of the King Pelias and Queen Anaxibia of Iolkos. He joined the Quest for the Golden Fleece against his father's wishes because Pelias truly believed that the Argonauts would all die before they could complete their quest. When the Argonauts returned to Iolkos with the Golden Fleece, Princess Medeia tricked King Pelias's daughters into killing their father. Jason could have become king but stepped aside and let Akastos succeed his father.
Amphidamas was one of the sons of Aleus from Arkadia. Amphidamas's brother Kepheos was also an Argonaut. Amphidamas's sister Auge was a consort of Herakles and the mother of Telephos.
Amphion and his brother Asterios were the sons of Hyperasios and Hypso from Pellene.
Ankaios was a son of Lykurgos from Tegea.
Ankaios was a son of Poseidon and Astypalaea from Parthenia. Ankaios was such as strong oarsman, he was given a middle position next to Herakles. When the helmsman Tiphys was killed, Ankaios took his place because of his affinity with the sea.
Areios was the brother of Talaos and Leodokos, and the son of Bias and Pero of Argos.
Argos was the son of Arestor and with the guidance of the goddess Athene, master builder of the Argo.
Asterion was the son of Kometes. He was born by the Apidanus River but made his home in Peiresiae.
Asterios and his brother Amphion were the sons of Hyperasios and Hypso from Pellene.
Augeias was the son of Helios [Sun] and the king of the Eleans. Augeias joined the Argonauts because he wanted to go to Kolchis and meet King Aietes. His wish came true when he and Telamon were allowed to accompany Jason on his first meeting with Aietes.
Boutes was the warlike son of Teleon from Kekropia. When the Argo passed the island of the Sirens, Boutes lost his senses and dove into the sea but before he was dashed to death on the rocks, Aphrodite [goddess of love] plucked him form the surf and transported him safely to Libya.
Echion and his brother Erytos were sons of Hermes [messenger of the Immortals] from Alope.
Erginos was a son of Poseidon [lord of the sea] from Miletus.
Erybotes was the son of Teleon from Opus.
Erytos and his brother Echion were sons of Hermes [messenger of the Immortals] from Alope.
Euphemos was a son of Europa and Poseidon [lord of the sea] from Taenarus. Euphemos could run along the surface of the sea without getting his feet wet. When the Argonauts were lost in Libyan, the god Triton gave Euphemos a clod of dirt that he would later throw into the sea and create the island of Kalliste.
Eurydamas was the son of Ktimenos and lived at Dolopian Ktimene near the Xynian Lake.
Eurytion was the son of Iros from Opus.
Herakles was the son of Zeus and Alkmene. Herakles had to leave the Argonauts before they reached Kolchis in order to complete his Twelve Labors.
Hylas was the servant [page or squire] of Herakles. Near Mysia in northern Asia Minor, Hylas went ashore for fresh water and was captured by a water Nymph and never seen again.
Idas was a son of Aphareus and the brother of Lynkeos from Arene.
Idmon was a son of the god Apollon and a skilled soothsayer. Before the Argonauts left Iolkos, he foresaw that he was going to die on the Quest for the Golden Fleece … he was killed by a boar.
Iphiklos was the son of Thestius from Phylake. Iphiklos was the brother of Jason's mother Alkimede and thus Jason's uncle.
Iphitos was the brother of Klytios and a son of Eurytos … he and Klytios were called "the warders of Oechalia."
Iphitos was the son of Naubolos and came from Phokis. When Jason went to consult with the Oracle of Delphi, Iphitos entertained him in his home.
Kalais and Zetes are the winged sons of Boreas [North Wind] and Orithyia. When the Argonauts encountered the blind seer Phineus and saw the way the Harpies tormented him, Kalais and Zetes were so moved by the old man's misery that they offered to chase away the flying women. Zeus allowed the brothers to pursue but not harm the Harpies.
Kanthos was the son of Kanethos from the island of Euboia. Kanthos died in the Libyan desert on the way home from Kolchis.
Kastor and Polydeukes are the sons of Zeus and Leda, and the brothers of Helen. When the Argonauts were trying to escape the pursuing Kolchians, the goddess Hera spoke to Kastor and Polydeukes through the beam of the Argo and told them to warn the Argonauts that they were destined for doom unless Zeus forgave Jason and Medeia for the murder of her half-brother, Apsyrtos.
Kepheos was one of the sons of Aleus from Arkadia. Kepheos's brother Amphidamas was also Argonaut. Kepheos's sister Auge was a consort of Herakles and the mother of Telephos.
Klytios was the brother of Iphitos and a son of Eurytos … he and Iphitos were called "the warders of Oechalia."
Koronos was the son of Kaineus from Gyrton. Although Koronus was considered to be a brave man, his father was braver still … he died, unflinching, in a battle with the Centaurs.
Laokoon was from Kalydon and joined the Argonauts at the request of his half-brother Oineus to watch over Oineus's young son, Meleagros.
Leodokos was the brother of the Argonauts Talaos and Areios, and a son of Bias and Pero of Argos.
Lynkeos was a son of Aphareus and the brother of Idas from Arene.
Meleagros was the son of Oineus from Kalydon. He was considered to be of the same caliber as Herakles except Meleagros was very young. His father sent Meleagros's uncle Laokoon to join the Argonauts so he could guard Meleagros.
Menoitios was a son of Aktor from Opus.
Mopsos was the son of Ampykos and a skilled seer who interpreted the flight of birds. On several occasions during the Quest for the Golden Fleece, he correctly advised Jason as to what the Immortals wanted him to do. Mopsos died in the Libyan desert when he was bitten by a serpent that had been created from the blood of the Gorgon Medusa.
Nauplios was a son of Klytoneos and descended from the lord of the sea, Poseidon.
Oileus was king of the Lokrians; after the Quest for the Golden Fleece became the father of the hero Lesser Aias [Ajax]. When the Argo sailed too close to the Island of Ares, Oileus was wounded in the left shoulder by an arrow-like feather from the war-birds that guarded the island.
Orpheus was the son of the Muse Kalliope and Oeagrus of Thrake. He had the distinction of being the first Argonaut to be listed by Apollonius Rhodius in Argonautika. Orpheus was the ultimate musician and used his musical skills to soothe and protect the Argonauts.
Palaemonius was a son of Hephaistos but had been raised by a man named Lernus. As proof of his divine birth, Palaemonius had crippled legs just like his father.
Peleus was the son of Aiakos from Phthia and joined the Argonauts with his brother Telamon. At the command of Zeus, Peleus was allowed to marry the Nereid Thetis. When the Argo sailed from Iolkos, Peleus and Thetis were already separated but the Centaur Cheiron brought Peleus's infant son Achilles to watch his father depart. The goddess Hera persuaded Thetis to help the Argonauts … Thetis secretly went to Peleus and gave him advice that helped save the lives of all the Argonauts.
Periklymenos was the eldest son of King Neleus of Pylos. Poseidon, lord of the sea, gave Periklymenos the ability to assume any shape he desired but during the Quest for the Golden Fleece we are not told of him using that trait.
Phaleros "of the ashen spear" was the son of Alkon from Kekropia.
Phleias was the son of Dionysos [god of wine] … his home was in Araethyrea by the springs of Asopos.
Polydeukes and Kastor are the sons of Zeus and Leda, and the brothers of Helen. When the Argonauts were trying to escape the pursuing Kolchians, the goddess Hera spoke to Polydeukes and Kastor through the beam of the Argo and told them to warn the Argonauts that they were destined for doom unless Zeus forgave Jason and Medeia for the murder of her half-brother, Apsyrtos.
Polyphemos was the son of Eilatos from Larissa. When Hylas the servant of Herakles disappeared, Polyphemos was designated to stay and continue the search after the Argo departed. Actually, this was all according to the divine plan because Polyphemos was destined to "found a glorious city at the mouth of Kios among the Mysians."
Talaos was a son of Bias and Pero of Argos … he was the brother of the Argonauts Areios and Leodokos.
Telamon was the son of Aiakos from Phthia and joined the Argonauts with his brother Peleus. Telamon was a strong fighter and fought at the front lines whenever the Argonauts were attacked. His son Telamonian Aias [Ajax] would became one of the Greek heroes of the Trojan War.
Tiphys was the son of Hagnias … he was of the Siphaean people of the Thespians. When the Argonauts were assigning the best men to the different jobs aboard the Argo, they unanimously chose Tiphys to be their helmsman because he was unequaled in reading the waves and winds. He steered the Argo through several perilous situations but died of after a brief illness before the ship reached Kolchis.
Zetes and Kalais are the winged sons of Boreas [North Wind] and Orithyia. When the Argonauts encountered the blind seer Phineus and saw the way the Harpies tormented him, Zetes and Kalais were so moved by the old man's misery that they offered to chase away the flying women. Zeus allowed the brothers to pursue but not harm the Harpies.
Before they reached Kolchis the Argonauts were joined by the son of King Lykos and the four sons of Phrixus:
Daskylos was the son of King Lykos of the Mariandyni … the king welcomed the Argonauts and told them of a debt he owed to Herakles for avenging the murder of his brother by the Mysians. To repay the debt, King Lykos sent his son Daskylos with the Argonauts.
Argos was the eldest son of Phrixus and Princess Chalkiope. He and his three brothers had left Kolchis and were sailing towards Orchomenos [on the Greek mainland] when they became stranded on the Island of Ares in the Euxine [Black Sea]. The Argonauts rescued the four young men and enticed them to sail back to Kolchis as part of their company.
Kytissoros was a son of Phrixus and Princess Chalkiope.
Melas was a son of Phrixus and Princess Chalkiope.
Phrontis was the youngest son of Phrixus and Princess Chalkiope.