"Poseidon is a prominent character in the Japanese manga ""First God of War"". As the God of the Sea, he possesses immense power and is feared by many.

Poseidon makes his first appearance in the manga when he confronts Zeus, the King of the Gods, over their conflicting views on how to handle the humans in their world. According to Poseidon, humans are insignificant and should be left to their own devices, while Zeus sees them as potential allies in their war against the Titans.

Despite their differences, Poseidon and Zeus end up working together to defeat the Titans and secure their place as rulers of the universe. However, Poseidon remains aloof and distant, continuing to hold humans in contempt and viewing them as little more than tools to be used in his schemes.

Despite his cold demeanor, Poseidon is shown to be a skilled and powerful warrior, capable of summoning massive waves and tidal waves at will. He is also an expert strategist and often uses his vast knowledge of the ocean to outwit his enemies and gain the upper hand in battles.

As the series progresses, Poseidon becomes embroiled in a number of conflicts with other gods and humans alike, always remaining true to his beliefs and never backing down from a challenge. His presence in the story is a constant reminder of the dangers and power of the sea, and his impact on other characters is profound and far-reaching.

Overall, Poseidon is a complex and fascinating character, one who is both feared and respected by those around him. His motives may be difficult to understand at times, but his ability to hold his own in battle and his unwavering devotion to his principles makes him a standout figure in the manga world."