Aro claims shape-shifters can take other mega animal forms and Edward says that Caius is terrified of true werewolves because of an encounter with one centuries ago, leaving him almost obliterated. As a vampire, Riley Biers is tall and muscular with bright red eyes and blond hair. Her special abilities are transmitting thoughts to others by touching their skin and penetrating mental shields, the opposite abilities of each of her parents. It also makes his pack brothers subject to any direct commands he gives them, though he dislikes taking their free will away from them and does so only when necessary, such as for coordination during fights. In Eclipse, Rosalie reveals her past to Bella with the hope that Bella will choose to stay human and she later joins in the fight against Victoria's army of newborn vampires. He accompanies Alice and Bella when they are hiding from James, using his ability to calm Bella when she is stressed or afraid. His mother died giving birth to him, and when he was born, he bit his aunt, Huilen, who hated him for causing her sister's death, causing her transformation into a vampire. Unlike most vampires, he is not at all tempted by the scent of human blood, due to the over years he has spent holding back his temptations. Kristen Stewart plays Bella in the Twilight film series. He has curly dark hair and dimpled cheeks, and despite his physical attributes, he is actually the joker among the Cullens. It notes that in biblical times, people married earlier, whereas the average age for marriage has been rising in America for years. In both parts of The Twilight Saga: In a battle between the army of newborns and the Cullens at the end of Eclipse, Edward voices Riley's concern that Victoria has been lying to him. She has the same facial features and hair color as Edward, but has curly hair inherited from her grandfather, Charlie Swan, and brown eyes like Bella. By the book's end, however, all of the characters have adopted this shortened version.