Jasper.
Laurant James and Victoria James trys to kill Bella in Twilight but the Cullens kill him Laurant trys to kill Bella in the middle of New Moon but the Jacob's pack kill him Vistoria trys to kill Bella in Eclpise but Edward kills her
When James tells Bella that he has her mother and then attacks Bella but the cullens kill James
The people who come after Bella and the Cullens in Breaking Dawn is the Voultri. Irina Denali goes to them telling them the Cullens have an immortal child and they come to kill them. It is proven that Bella gave birth to the child and they leave them.
no! Edward has never tried to kill Bella!!! He's in love with her
Because Bella had a child while she was still human.
The Cullens kill James so Bella is safe again.
The Volturi wanted to kill the Cullens because they believed Renesmee, Bella and Edward's daughter, was an immortal child, which is forbidden in their vampire law. They viewed immortal children as too dangerous and uncontrollable.
In Breaking Dawn, Irina betrays the Cullens by telling the Volturi about Renesmee, Edward and Bella's half-vampire daughter. She does this because in New Moon, Irina's mate, Laurent was going to kill Bella. Jacob and his werewolf pack intervene and kill Laurent first. Irina is still upset about this in Breaking Dawn, so she betrays them.
The name of the vampire that the Cullens killed was "James". He was with Victoria and Laurent, trying to drink Bella's human blood. Laurent went off as soon as he heard the plan, so Victoria and James chased Bella. James actually called the apartment when Bella was escaping with Alice and one of the other Cullens, and threatened to kill her mother, even though he didn't have her mother.
Riley, the first vampire of the army Victoria makes to kill Bella and the Cullens.
Victoria is coming back to fight the Cullens because she wants to kill Bella. She makes an army of vampires and they go and fight the Cullens and the werewolves. The cullens win and Edward kills Victoria.
The Cullens killed James to protect Bella, who just happened to be Victoria's mate. Victoria wanted to avenge him, so she set out to kill Bella, an eye for an eye, or, in this case, a mate for a mate. The Cullens have to protect Bella again, so they kill Victoria, which was the only way to keep Victoria away. Hope that helps!