Niobē.
They are Apollo and Artemis.
There is no Greek god named Appolo. You might have meant Apollo. Apollo was a twin to Artemis, they were the children of Leto and Zeus. Athena the daughter of Zeus was a half sister.
Outright? The children of Niobe, who she bragged were better then Artemis and Apollo, and she better then Leto, who had only born twins while she had six boys and six girls. Some claim there were fourteen children and not twelve, for Artemis and Apollo spared one boy and one girl.
Latona of Roman myth had two children: Apollo and Diana/Artemis.
Artemis is the name of a Greek goddess, daughter of Leto. Artemis and her twin brother Apollo were two of the twelve Olympians, their father Zeus was king of the gods.
Niobe, daughter of Tantalus: told her people to stop worshiping Leto and Apollo and Artemis, for Niobe thought herself and her children greater then those gods and goddesses. She was punished by her six sons and six daughters dying at the hands of Apollo and Artemis: some myths claim a daughter or/and son survived.
The daughter's name is Niobe. She boasts to Leto that she is more blessed because she has more children than her. In some versions, Niobe pokes fun that Artemis dresses like a man. Outraged Leto sends her children, Artemis and Apollo, to attack Niobe's children. Artemis kills Niobe's daughters and Apollo kills Niobe's sons. In most accounts, all of the children die except for one or two. Niobe, sadden, travels to the top of a mountain and cries until she turns into a stone with her tears flowing as rivers.
No. Athena is a daughter of Metis and Zeus. Leto's only children are the twins, Artemis and Apollo.
Apollo and Artemis
Artemis and Apollo are twins. They are the children of Zeus and Leto.
Artemis is the daughter of Leto and Zeus. Artemis is also the twin sister of Apollo.
Artemis is the daughter of Zeus by Leto, her twin brother is Apollo.
Apollo was Artemis's sister she was never married and was the daughter of Zeus.
Artemis is the daughter of Zeus by Leto; her twin brother is Apollo.
She was the daughter of Zeus and Leto, and twin sister of Apollo. She had no husband or children, for she was a virgin goddess.
Rhea
No, Apollo and Artemis are the children of Zeus and Leto.