Poseidon's personality / interactions woth other gods

Poseidon was one of the greediest gods. He was always trying to expand his underwater palace. He wanted more gold, coral, and pearls to add to his wealth. This may be one reason why he was so aggressive. Poseidon was very violent.  He wasn't always this way, but when he was, he was one of the most dangerous gods.
Poseidon's wife is Amphitrite, granddaughter of the titan Oceanus.
Parents: Cronos and Rhea
Brothers: Zeus, Hades
Sisters: Hera, Demeter, Hestia