After a werewolf dies with Klaus' blood in their system, their transformation will be successful only if the wolf completes their transition by drinking the blood of a human Petrova doppelgänger. After Elena transitioned into a vampire, her blood became useless to Klaus and he could no longer create more hybrids.
They are unable to have children because nature forbids it. Nature also apparently gave werewolves the supernatural ability to breed. By triggering the curse Klaus gained a werewolves power to breed.
Klaus was the first ever hybrid. To create them, he would have needed to kill a werewolf with his blood in their system, and then have them drink his blood again to transition into a vampire. The doppelgänger was used to bind Klaus.
However, when Klaus made his first human kill after being turned into a vampire, he triggered his werewolf gene, which turned him into a the world's first hybrid and revealed that he was the illegitimate child of the Alpha of the same pack whose member was guilty of killing Esther and Mikael's son, Henrik.
No, all hybrids are not sired to Klaus as sire bonds can be broken (Example: Tyler Lockwood). Hayley is not sired to Klaus as she was turned by Hope's blood.
The Original Tribrid is a extremely powerful vampire that is known for being the first of his bloodline and the first generation of vampires, which makes him the oldest, fastest, strongest, and most powerful vampire, werewolf, and witch in the world.
A Quadbrid is a combination of a Vampire, Witch, Werewolf, and a Jishno. Only one exist at the moment (Jaden Martin). Quadbrids have all the abilities as these supernatural beings.
After a werewolf dies with Klaus' blood in their system, their transformation will be successful only if the wolf completes their transition by drinking the blood of a human Petrova doppelgänger. After Elena transitioned into a vampire, her blood became useless to Klaus and he could no longer create more hybrids.
There in England, in 1492, Katherine met Klaus, who she was taken with until she found out he wanted to drain her blood to lift a vampire curse. She ran, with Trevor's help.
From his strength to senses to healing powers and even telepathic abilities, Klaus was more superior to his siblings since he had both vampire and werewolf genes in him.
Elijah is an Original Vampire. Elijah is the son of Esther and Mikael. He is the younger brother of Freya Mikaelson and Finn Mikaelson, and the older brother ofKol Mikaelson, Rebekah Mikaelson and Henrik Mikaelson.
There is never any mention of Klaus having any magic before he was turned, so Klaus may not have actually had any magic to make him a tribrid, even if the inconsistency of being a witch and a vampire wasn't a problem. Magic may have skipped a generation in his case.
With the death of Mikael, Klaus Mikaelson, Elijah Mikaelson, Lucien Castle, Alaric Saltzman, and Finn Mikaelson, Hope is now the strongest creature on the planet only rivaled by the last remaining Originals ie; Rebekah and Kol Mikaelson but possesses an edge over them to her hybrid nature and her only equal is possibly ...
Hayley Wasn't Sired To Hope
At the end of the first season of The Originals, Hayley dies with Hope's blood in her system, and thus she transitions into a hybrid after completing the transition with more of Hope's blood.
Hope naturally has the blood of an Original vampire-werewolf Hybrid in her system and she was never put under the Hybrid Curse before to be prevented from creating Hybrids without the need to use a doppelgänger's blood to complete their transition.
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.
At the time, Klaus was killed, meaning all vampires sprouting from his bloodline also die, which includes Damon and Stefan. She picks to say goodbye to Stefan. However, all these vampires end up surviving when Klaus never really dies. To save her, Doctor Meredith Fell (Torrey DeVitto) fed Elena Damon's blood.
Tatia. The first Petrova doppelgänger, Tatia, lived during the late 10th/early 11th century. Amara had no children, so Tatia was linked to Amara though a child of one of Amara's siblings.
In the season one finale, Caroline is severely injured in a car wreck and suffers from internal bleeding. Damon Salvatore feeds Caroline his blood to heal her. Later that night, Caroline is smothered to death with a pillow by Katherine Pierce, who found out that Damon gave her some of his blood.
1/2 Werewolf, 1/4 Vampire, 1/4 Witch
Hope Mikaelson is the only surviving example of this variation of Mortal Tribrid. She received 1/4 Vampire, 1/4 Werewolf, and 1/4 Witch from her father (Niklaus Mikaelson) and 1/4 Werewolf from her mother (Hayley Marshall-Kenner).
Bonnie seemed to always be in pain, whether through her mother's abandonment years before, her grandmother's death, or her father's murder. Bonnie dies after resurrecting Jeremy, and the revival that turns her into the anchor to the Other Side results in Bonnie feeling the pain of each death that goes through her.
She is the mother to Andrea, Jayden, and Hayley Mikaelson.
Wood: A wooden stake through the heart will desiccate a tribrid and temporarily "kill" them. However, wood from what appears to be a Red Oak tree can permanently destroy a tribrid as Nature created a balance near the site of the tribrids' birth through the sapling that Hope, Lizzie, and Josie created.
Because of this, they do not produce supplication and are unable to become pregnant but they can impregnate female humans. Also, tribrids obtain lower body temperatures than humans.
A Siphoner witch-werewolf hybrid who has already activated their werewolf curse would be the likeliest candidate to become a tribrid. However, the second condition is dependent on whether Nature, along with the Ancestors, would permit Hope to create more tribrids even if...