Poseidon is one of Zeus's brothers, and the ruler of the seas.
Poseidon was the son of Kronos, King of the Titans. and the middle child between Zeus and Hades. Poseidon and his brothers made war on their father after he tried to kill them. The Gods and the Cyclopes worked together, in which they made powerful weapons to battle the Titans. Poseidon received the Trident, which became his signature weapon and was revered by the mortals.
During the Titanomachy, Hades, created a giant monster called the Kraken to help them against the Titans. Poseidon and his brothers combined their weapons and powers to defeat Kronos. Afterwards, Kronos was imprisoned in the Underworld and Poseidon became the ruler of the seas. The films do not elaborate, but presumably he drew lots with his brothers as he did in the original myths.
When Zeus created the humans and ordered them to pray to the Gods, Poseidon found his powers increased to a greater degree. However, Zeus purposely excluded Hades from this and order him to remain in the Underworld. It is unknown how Poseidon reacted to this, but it is likely that being enamoured of his newfound power he simply turned a blind eye.
Years later, Poseidon had an affair with an unnamed mortal woman and had a son named Agenor. Around the same time, Zeus had an affair with a female mortal named Danae and had a son named Perseus. Poseidon is known to have shared some contact with Agenor, possibly keeping watch over him just as Zeus did with Perseus.
Poseidon is also responsible for the rape of Medusa in Athena's temple, which results in Athena cursing Medusa and turning her into a Gorgon.
Clash of the Titans 2010 Edit
"Zeus, our brother speaks the truth. Hear him" - Poseidon welcomes Hades' counsel
At length the relationship between Gods and humans declines and the humans begin to rebel. No longer praying to the Gods, the Olympians begin to weaken.
Poseidon is first seen in the throne room of Mount Olympus, A deleted scene shows him hotly arguing with the other Gods, urging them to lay waste to Argos and its rebellious King. Zeus seems to agree that the humans deserve no mercy, but he is reluctant to attack. When Hades arrives, he reasons that the humans need to be intimidated and brought into line. Poseidon agrees and urges Zeus to hear him out. Zeus also agrees and grants permission for Hades to do as he pleases.
Poseidon is last seen at the council of the Gods as they await Hades, who plans to unleash the Kraken on Argos. Zeus bids all the Gods to leave him and Hades as they release the Kraken. Hades' ultimate intention however was to usurp Olympus from Zeus, but Perseus succeeds in killing the Kraken with Medusa's severed head. Hades is banished to the Underworld again.
Wrath of the Titans 2012 Edit
"Hades and Ares have joined Kronos against humanity" - Poseidon
Prior to the events of the film, Poseidon is known to have made contact with his son Agenor, likely inspired by Zeus taking an interest in Perseus. For reasons unknown, Poseidon and his son were soon estranged, as Agenor implies that they parted on bad terms. Despite this, Poseidon comes to respect humans.
With the Gods' power diminishing, Poseidon was soon one of the few Gods left on Earth. Eventually Poseidon was approached by Zeus, as Tartarus was on the verge of collapse. Poseidon agreed that they should restore Tartarus and protect the human race. Therefore Poseidon meets Zeus, Hades and Ares in the Underworld. Once there, Poseidon warmly greets his brother, though he is quick to notice that there is tension between Zeus and Ares. At the gates of Tartarus, Poseidon openly encourages Hades to unite with them, as does Zeus.
Unfortunately Hades is already in league with Kronos and has no interest in maintaining Tartarus. The Makhai attack and rain fire on the Gods. Poseidon casts lightning bolts at them, but a stray fireball hits him in the chest. He then witnesses Ares betraying Zeus and stealing his thunderbolt. Some time later, Poseidon regains consciousness and battles his way out of the Underworld, but sustains further injuries doing so.
Poseidon reappears when he hears Perseus calling for his father. With Zeus trapped in the Underworld, Poseidon answers the call instead. By the time Poseidon arrives in the temple of the Gods, he is slowly dying. However he lasts long enough to relay to Perseus that Zeus is now a prisoner in the Underworld. Poseidon instructs Perseus to find his son Agenor, who can take him to the "Fallen One", who can ultimately lead them to Zeus. With his last breath, Poseidon hands over the Trident to Perseus, advising that it will aid him. The God then turns to dust and vanishes.
Despite his death, Poseidon's legacy continues to influence the events that unfold. The Trident proves to be the most powerful tool that Perseus and Agenor wield on their quest to rescue Zeus.
Powers and abilities Edit
As the son of Kronos, Poseidon was one of the most powerful Gods on Olympus. During the time that mortals prayed more to the Gods, Poseidon's power was nearly on par with Zeus himself. Even when weakened by lack of prayer, he still had enough power to escape the Underworld when ambushed by the Makhai, something which Zeus failed to do.
- Lightning - when battling the Makhai, Poseidon shoots powerful lightning bolts from his trident, a power shared by his brother Zeus.
- Hydrokinesis - Poseidon has control over the seas. Some of this power is stored in the trident, as Agenor uses it to manipulate the water and steer Andromeda's ship towards the Island of Kail.
- Teleportation - Poseidon was able to teleport to the Mount of Idols instantly.
- Earthquakes - while never demonstrated, Poseidon likely had the power to shake the earth like his mythical counterpart.
- Expert navigator - as the God of the Seas, Poseidon knows the way of navigation. Hephaestus acknowledges that he learned navigation from Poseidon
While he has limited screen time, he clearly demonstrates a fiery temperament when quarreling with the other Gods in the first film. Poseidon also displays contempt for humans, arguing that they should be punished for their defiance.
In the sequel he appears more level headed, as he now supports Zeus in restoring order to the world and protecting humanity. Poseidon is loyal to his brothers as he staunchly supported Zeus. He also demonstrated respect towards Hades, as he openly vouched for his brother in the first film. In the sequel Poseidon was keen to join forces with Hades again, later expressing regret that Hades has chosen a different path. He appears to have put aside his disdain for humans as he made an effort to tutor his son Agenor, even thought their relationship soured. Otherwise Hephaestus remembers him fondly, noting that Poseidon taught him how to navigate and how to seduce a mermaid.
Perseus himself also refers to Poseidon as a great God.