The Muses were the daughters of Zeus and Mnemosyne. They were known for the music of their song, which brought joy to any who hear it. There are nine Muses, each with her own specialty: Clio (History), Urania (Astronomy), Melpomene (Tragedy), Thalia (Comedy), Terpsichore (Dance), Calliope (Epic Poetry), Erato (Love Poetry), Polyhymnia (Songs to the Gods), Euterpe (Lyric Poetry).
Nereus was an early god of the sea. He was often refered to as "The Old Man of the Sea." He had the ability to foretell the future and to alter himself into various shapes. He married Doris and had fifty daughters called the Nereids. Among these 50 included Amphitrite, the mother of Triton and Thetis, the mother of Achilles.
Nemesis meant righteous anger, due enactment, or divine vengeance. This god helped to avenge those who were wronged.
Pan was the son of Hermes. He was the god of goatherds and shepherds. He was mostly human in appearance but, with goat horns and goat feet. He was an excellent musician and played the pipes. He is merry and playful frequently seen dancing with woodland nymphs. He was at home in any wild place but, his favorite was Arcady, where he was born. He was always in pursuit of one of the nymphs but, always rejected because he is ugly.
His name was the basis for the word "panic". There are two differing explanations for this. The first was that he was present when Zeus defeated the Titans and claimed that it has his yelling that caused the Titans to flee. However, this seems at odds with his being Hermes' son. The second was that he created the noises in the woods at night the scared travelers.
Pollux was the brother of Castor and Helen. Leda was their mother. Castor and Pollux lived half of their time on earth and half of the time in heaven. Both Castor and Pollux were the protectors of sailors. They were also very powerful in battle.
Selene was the goddess of the moon. She bore Zeus a daughter - Pandia and allowed herself to be seduced by Pan for a good piece of fleece. Her great love was Endymion and handsome king of Elis. She bore him 50 daughters. Still love struck, she offered to grant him a wish. He asked to sleep forever without aging, thus retaining his good looks for all time.
Thetis was a sea goddess who was the daughter of Nereus and Doris. She was a beautiful goddess who was to have a son greatest than the father. Both Poseidon and Zeus persued her but they shunned her upon discovering that a child bore by her would be greater than themselves. She later married Peleus and bore a son, Achilles who was much greater than Peleus.