Hecate

Is the goddess of magic and witch craft. She is usually seen with  2 torches in her hand. Hecate parents are the titans  Perses and Asteria.  Her roman name is Trivia. In the first war against titans she sided with the Olympians. She supported the titans in the second titan war. She is also the goddess of mist and sorcery. Hecate is a minor goddess.

     

Hercules

Hercules is hes roman name Heracles is his Greek name. He is  a son of Zeus and  mortal Alcmena.  He had to do ten Labours  because i think he had to prove himself.When  the Greeks came they thought that  he needed a better name so they said his name would be Hercules instead of Heracles. Hercules is known  for his strength.

   

Artemis

    Artemis is the goddess of  chastity, virginity, the moon, the hunt,  and the natural environment.  She is daughter of  Zeus and Leto.  Her roman form  is Diana. Her symbol are arrows, bow, hunting dog and moon.  Her mother Leto gave birth to her and Apollo on an island  called Ortygia. Her twin brother is Apollo.  When Artemis  was born she helped her mother give birth to Apollo.

I got some of the information  in http://www.greekmythology.com/Olympians/Artemis/artemis.html, http://riordan.wikia.com/wiki/Hunters_of_Artemis, en.wikipedia.org/wiki/Artemis#Birth

She also has a group called the The Hunters of Artemis. It is only for girls.  Girls that  chose too  be in the hunters of Artemis they can't decide to do it they have to show bravery.  If they do end up being on the team / groups they swore of loyalty to join her in the  Hunt they reject boys for the rest of their lives. They become immortal; as long as they do not break their vows.                                                                                                                                          

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 

Perseus

  Perseus was the first person who defeated Medusa.  He was the son of  Zeus and  mortal Danae.  His siblings are Ares, Apollo, Athena, Dionysus, Hermes, Aphrodite, Heracles, Artemis, Hephaestus those are all the ones that  I know. 

He saved Andromeda form the sea of monster Cetus.Some of his children  are Perseas, Gorgophone, Heleus, and Electryon. Perseus married Andromeda. After he slayed the monster setting her free  and when he was done he claimed her for marriage. When Perseus cut off Medusa head a Pegasus flew off from her neck. Two gorgons pursued him, but he escaped.

Hestia

 Hestia is the  goddess of the hearth,life and domestic life. Hetsia roman form is Vesta.  Her symbol is a hearth with fire.  Her parents are Cronus and Rhea.  Some siblings are Demeter, Poseidon,. Zeus, Chiron, Hera, and  Hades.   She was the eldest of Cronus and Rhea.  Her parents are The Titans Rhea and Cronus.  Hestia is an Olympian for the first generation. The other then her being in the first generation Hera and Demeter are also in the first generation too.  She is the eldest daughter of the Titans  Cronus and Rhea.  Hestia is not married. In a myth i heard that  Zeus and Poseidon asked her for marriage.   

 

Ares

 Ares is the god of war. He is the son of Zeus and Hera. In most of the myths i have read  he is violent. He does not have eyes he has sockets. He wears glasses  to cover up his eyes. He and Aphrodite  date even though  Aphrodite is married to Hephaestus . Ares symbol  is  a  boar.  Ares has kids like Clarisse  La Rue  that are violent and mean. He expects them to be mean to everyone and to be at the top of everything. His roman form is Mars.Mars is more warlike the Ares. 

    

Demeter

Demeter is the goddess of corn,grain and harvest.Demeter is the daughter of Cronus and Rhea. She is the goddess of the earth and  agriculture. Her roman name is Ceres.  It is said that Demeter has a daughter that is named Persephone.

 I heard in a myth that one day Persephone was walking around when  Hades abducted her. When Demeter came back because she was at a council god meeting  She was ferocious and went to talk to Zeus. When they went and realize that is was Hades. It was to late Persephone already ate pomegranate seeds. Zeus made a deal that said Persephone had to spend 4 months each year in the underworld.  While in those four months Demeter  grieving her gifts from the world creating winter.