Makenna and Charles are a couple of nomadic vampires. They first appear in Breaking Dawn when they are brought by the Volturi to witness against the Cullens.
Prehistory
Makenna
Makenna is the descendant of a Maltese family with a unique link to vampirism. Some members in her family have become vampires throughout the millenia to protect and provide for the family. Makenna was one of the chosen ones. One of her ancestors, Luca, changed her at the age of 26. Despite her newfound love for a young man named Charles, she still chose immortality as her fate and promised Charles to return someday.
Charles
Charles was a law student in Barcelona who moved from Denmark. He met Makenna while they were both human. When Makenna told him that she was going to undergo huge changes in her life and had to leave for a while, he promised to wait for her.
History
Makenna and Charles met when he was a law student in Barcelona and fell in love. Makenna's ancestor, Luca, told her that she could abandon her destiny of becoming a vampire if she wanted a normal life with Charles. However, she still chose immortality. Before she left, she promised Charles that she will return. Makenna waited for her newborn year to pass while Charles waited for her return.
After she left her newborn state behind, she found Charles again, who was still waiting for her. After telling him about life as a vampire, Charles decided to join her. They waited 3 years for Makenna to practice her self-control to avoid killing him by accident.
After he was successfully changed and found out about his power of lie detection, they lived a nomadic lifestyle together, but Makenna still visited her family often.
Breaking Dawn
Makenna and Charles both join the confrontation between the Volturi and the Cullen family and their witnesses in Breaking Dawn, when Charles 'knows' that the Cullens are innocent, he and Makenna take their leave.