A witch, a werewolf, and a vampire. Natalia Grace
Nikolaus Mikaelson is an Upgraded Original-Witch Hybrid. He is the son of Marcellus Mikaelson and Rebekah Mikaelson.
Isaac was 40 years old when he married Rebecca. Twenty years elapsed before they had children; throughout that time, both Isaac and Rebecca prayed fervently to God for offspring. God eventually answered Isaac's prayers and Rebecca conceived.
Hope Andrea Rebekah Mikaelson is a vampire-werewolf-witch mortal tribrid.
Dianna Monet Mikaelsson (nee Labonair) is an Original Immortal Tribrid. She is the daughter of Alaina Olsen and Cyrus Labonair. She is the wife of Elijah Mikaelson, adoptive mother of Saga Mikaelssen, and the mother of Olympia Mikaelson.
We've all heard of the famous tribrid Mikaelson daughter, Hope Mikaelson. Daughter of Klaus Mikaelson. Her story is pretty simple, Hope was conceived in a one night stand by her dad Klaus Mikaelson and her mom Hayley Marshall Kenner.
Sophia Zariah Mikaelson is a extremely powerful elemental witch and the tritagonist as well as a heroine of The Originals Fanfiction. She is the biological daughter of Qetsiyah and Agapios, the younger sister of Damien, the niece of Kayleigh, and was the ward of Andra.
Freya is the firstborn child of Mikael and Esther, the elder sister of Finn, Elijah, Kol, Rebekah, and Henrik, the maternal older half-sister of Klaus. She is the paternal aunt of Klaus and Hayley's daughter, Hope.
Grace Katrina Petrova-Mikaelson is a main character in Legacies, and she was a recurring character in The Vampire Diaries before being promoted to a main character in the fifth season of The Originals. Grace is the heretic daughter of Elijah Mikaelson and Katrina Petrova.
Adyelya is the tribrid daughter of Niklaus Mikaelson and Katherine Pierce, the step-daughter of Markos, Leader of The Travelers—who marries her mother—and the twin sister of her younger brother by several minutes, Håkon Mikaelson, who was murdered in From a Cradle to a Grave by the witches.
Elijah Mikaelson: Elijah is the current husband of Elena Gilbert and the father of their son, Johnathan Mikaelson and an unnamed daughter. He is also the step-father of Jenna, Grayson, Zachary, Stefanie, and Sarah Salvatore. Elian Konstantinov: Elian is the former lover of Katherine and the biological father of Nadia.
Summary of Genesis 25:19-26
Isaac was forty years old when he married Rebekah. He prayed for children, and God gave them twins. Rebekah prayed and God said “two nations are in your womb”. Isaac was sixty years old when Rebekah gave birth to Esau and Jacob.
This is the family relationship between the original vampire, Elijah Mikaelson and the mortal tribrid, Olympia Mikaelson. Olympia is Elijah's only biological child and is the daughter he had with his wife, Dianna Mikaelssen.
She is the daughter of Hayley Marshall and Niklaus Mikaelson. She is the only Tribrid in the world and many view her as a threat. Hope was conceived from her parents one night together sometime before the events of the first season. She was named Hope from inspiration of being hope for the Mikaelsons.
Eventually Mikael and Esther had 7 children. It was believed that their firstborn, Freya Mikaelson was killed by a plague that hit their home town.
Rebekah Sinclair (née Mikaelson) was one of the main characters in the first season and after her departure, she became a special guest for the rest of the series and Eternal Darkness. She was an Original Vampire before becoming human again in the season one finale.
Grace Amaris Rose O'Connell-Mikaelson is a siphoner-werewolf-vampire mortal triman. She is the daughter of Niklaus Mikaelson and Camille O'Connell-Mikaelson and the paternal younger half-sister of Hope Mikaelson.
Ian Somerhalder
Similar to his on screen brother, Somerhalder was up for coming back to the TVD universe, but not as Damon Salvatore — though Legacies often mentions Damon and Elena (Nina Dobrev).
Premise. Legacies follows Hope Mikaelson, the daughter of Klaus Mikaelson and Hayley Marshall, who is descended from some of the most powerful vampire, werewolf, and witch bloodlines. Two years after the events of The Originals, 17-year-old Hope attends the Salvatore School for the Young and Gifted.
Freya Mikaelsdottir is a witch-vampire hybrid. She is the eldest daughter and first child of Mikael Agnarsson and Esther Mikaelson.
Nik is the son of Freya Mikaelson and Keelin.
Freya Mikaelson is a powerful witch and the first-born child of Mikael and Esther. She is the elder sister of Finn, Elijah, Niklaus, Kol, Rebekah and Henrik.
She was the older sister of Esther, the sister-in-law of Mikael, the maternal aunt of Freya, Finn, Elijah, Niklaus, Kol, Rebekah and Henrik Mikaelson, and also the great-aunt of Freya's deceased unborn son and Hope Mikaelson.
Sage Maria Mikaelson (née Benedici) is a vampire and the wife of Finn Mikaelson. She is the daughter-in-law of Esther Mikaelson and Mikael Agnarsson through her marriage.
Davina is a member and the last surviving witch of the Claire Family and a relative to the Mikaelson Family due to her marriage with Kol.