Brothers:
Hades
Zeus
Sisters:
Hera
Hestia
Demeter
Hades and Zeus are his brothers, his sisters including Hera, Demeter, and Hestia.
I think that Poseidon's siblings are Zeus and Hades.
Parents: Cronus (kronos) and Rhea Brothers: Zeus and Hades sisters: Hera, Demeter and Hestia Wife: amphitrite children: A whole list of them but most famous is Triton
He had 11 brothers and sisters.
There are 4 brothers and 3 sister's all up. Assume your one of the brothers - hence you have 3 brothers and 3 sisters. However any one of your sisters, would have 4 brothers and 2 sisters.
Athena had no brothers or sisters.
he had no brothers or sisters
brothers and sisters
no she has no brothers or sisters.
Black beard had no sisters or brothers
2 brothers and sisters
She had 12 brothers and sisters