He wasn't really bad...he just had a temper!
yes.
Poseidon is God of water. That is the only thing he is "God of."
Poseidon was known for the god of the sea. He can control any water thing.
Try to think of any thing bad he or shehas done.
Poseidon is generally known as a proud and stubborn God as many of the Olympians were, Zeus and Athena in particular. This is not a bad thing in moderation. He also is said to have short temper which often resulted in vicious storms and dead sailors. Not good...
Like most greek gods and goddesses Poseidon did good and bad things.
It is not that bad because that means you have something to live for. Also you have people who love you and sometimes a lot needs to be done.
Poseidon did not blow up the universe.
The trident you are talking about is Poseidon's thing that looks like a fork. Poseidon is god of the seas.
So he doesn't look bad
It is bad because Poseidon is a god, and his offspring with a mortal like Polyphemus creates a monstrous being that causes harm to others, like in the case of Polyphemus who terrorized Odysseus and his men in Homer's "The Odyssey". Poseidon's divine power mixed with mortal traits can result in unpredictable and dangerous consequences.