Poseidon Saint Seiya
Julian Solo, solos

 

Name: Poseidon / Julian Solo
Origin: Saint Seiya
Gender: Male
Classification: God and Ruler of the Seas, Olympian Champion
Age: 16 (human age, as a God has lived for thousands of years at least)
Powers and Abilities: Skilled warrior, through divine Cosmo has super strength, super speed, enhanced durability, telepathy (he cursed a woman into falling in love with a bull he had sent from the seas to her husband, from which union she gave birth to the Minotaur), telekinesis (Poseidon's telekinetic abilities were powerful enough to smash Bronze Cloths with a golden hue, making them in turn similar in durability to a Gold Cloth, he was able to easily redirect the Sagittarius arrow shot by Pegasus Seiya as well as all his Pegasus Ryûsei Ken attacks, in order to save the world from Hades' tyrannical rule Poseidon sent the Gold Cloths through the interdimensional expansion between the Underworld and the Elysion), energy blasts, forcefields, levitation/flight, higher senses to track people and events over large distances and through dimensionsdimensional travel, astral projection, soul manipulation (demonstrated the ability to transfer his own soul into Julian Solo's body despite being sealed away in the Amphora), commands the waters and rains and can make them obey his every whim (Poseidon attempted to flood the Earth with these powers - along with global earthquakes - to cleanse humans of sin and would have accomplished it if his plans weren't messed with, in The Lost Canvas he could materialize his armor and trident from them), immortality (mix of types 1, 3 and 4, he reincarnates in Earth through the centuries with 8th sense resurrection capabilities)
Weaknesses: He can't initially use all his divine Cosmo due to being reborn as an avatar (Julian Solo)
Destructive Capacity: Universe level+ via powerscaling (in the battle against the Bronze Saints Poseidon constantly rose his cosmo out of anger, three times in succession, the first time the saints commented that they had never felt such a gigantic Cosmo, the second time they made mention of it being hundreds of times larger than before and in the final instance Seiya alone commented that it was so huge it could almost encompass the universe)
Range: Planetary by feats (done with a fraction of his real power), universe level via powerscaling (he's one of the most prominent Olympians who all fought against the unsealed Titans in the Titanomachy war for 10 years)
Speed: Massively FTL+ (also was able to react to the Sagittarius arrow fired by Seiya multiple times)
Durability: At least multi galaxy level+ with his Marine Scales armor, much higher with Kamui, universe level+ via powerscaling, ignores absolute zero (the Cosmo of one of his trident blasts overpowered Hyoga's Aurora Execution)
Lifting Strength: Unknown
Striking Strength: At least Class Multi Galactic+, likely Universe Class
Stamina: Seemingly endless
Standard Equipment: Marine Scales armor or Kamui, Trident
Intelligence: Extremely intelligent, formulated a plan to capture Athena, skilled combatant
Notable Attacks/Techniques:

Trident: Poseidon commands a mighty trident as a symbol of his control over the seas, with this weapon he is able to fire powerful energy blasts.

Notable OBD Victories:

Notable OBD Losses:

Other: Explanation of Cosmo, Big Will and the 9th sense included

Trivia: Poseidon has used the members of the Solo family as vessels to his soul for centuries, it's speculated in some materials that Poseidon's true body could have been destroyed in the past