Aliases: Neptune; Neptunus
Identity: The general public considers Poseidon to be a figment of myth
Occupation: Greek god of the sea and the storm
Marital Status: Married
Known Relatives: Cronus (father); Rhea (mother, deceased); Zeus (brother); Hera (sister); Hestia (sister); Demeter (sister); Hades (brother, deceased); Triton (son, deceased); Polyphemus (son); Amphitrite (wife)
Base of Operation: Formerly Earth's oceans, now Olympus
Group Affiliation(s): Olympian Gods
Hair: White foam
Distinguishing Features: Poseidon often manifests himself as a merman, with green skin, seafoam for hair and a fish-tail
First Appearance: (in a DC Comic): Flash Comics #9 (September 1940); (canonical): Wonder Woman Vol. 2 #1 (February 1987)
Poseidon is the god of the sea in ancient Greek mythology.
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POWERS AND WEAPONS
Poseidon's attributes are a fishnet and a trident (which was given to him by his wife Amphitrite.
For a definitive list of appearances of Poseidon in chronological order click here