Caius is described as having "skin so white that it's almost translucent", comparable to an onion's skin. His eyes are dark red, though cloudy or milky like Aro's and Marcus'. His snow-white hair is shoulder-length, very close in color to his skin tone, and being 5'9" tall. He was transformed in his 20's with an average build and is very graceful: almost looking like he is floating when he moves. As one of the leaders of the Volturi, he wears a pitch black cloak. Caius is very ambitious; he can easily be considered the cruelest of all three leaders and is seen as never extending mercy to anyone. Whenever the opportunity presents itself, he advocates for the most draconian methods of handling situations, and is usually in favor of battles and executions. He is always at the head of any punitive missions, much to his pleasure. He is also known to be sadistic, as he enjoys having Jane torture offenders of his coven's laws before they are executed. This depends on the fact that he is actually a very insecure individual who enjoys abusing his power over the vampire world to feel powerful. Caius thinks animal blood is repulsive and a vegetarian lifestyle is "warped". This way of thinking may also be supported by his deep hatred of werewolves because of his near death by the hands of a werewolf. Guest's mate/imprint.

Aro Volturi is described as having a strikingly pale, almost translucent complexion that resembles delicate onion skin. He stands at 5 feet 10 inches with a slender, graceful build, and his long, jet-black hair falls fluidly past his shoulders. His most unsettling feature is his eyes, which are a bright red—a trait common among ancient vampires who survive on human blood. Aro possesses the gift of "tactile telepathy", an ability to read people's minds; he can reach far more deeply into a person's mind than Edward Cullen, because he is capable of reading every thought, feeling and memory a person has ever had in the past. This power works very effectively in gathering information and looking into thoughts that his subjects may want to hide. It is, however, limited by his need to touch the subject in order for him to access that mind. Because of this power, he can learn any visitor's past and intentions of their visit. When interrogating a criminal, he uses his power to examine the guilty party's mind and see the proof they present. It has also happened on occasion that he discovers individuals with intriguing capabilities by seeing them through someone else's memories, such as Jane and Alec, Bella, Benjamin, Kate, Zafrina and Alice. Aro normally carries himself in a cheery disposition and has shown to be polite to the point of being at complete ease even in the most objectionable of situations. Beneath this facade of optimistic giddiness, he is power-hungry, smart with his actions and highly manipulative. He finds Bella Swan's immunity to mental powers, including Jane's "painful" illusory power, intriguing. Though he has never wanted anything more than Alice Cullen's power, after Bella became a vampire, he twice invited her to join the Volturi guard, which she refused both times.

He has black hair to shoulder length, standing 6'0" tall, with an average build and, like Aro and Caius, is incredibly graceful in his movements. His white skin is translucent with a papery texture, and his eyes are red. As the co-leader of the Volturi, he wears a black cloak. The loss of Didyme has made him totally expressionless and uninterested about everything else in existence. As a result of losing his mate, Didyme, Marcus eventually became extremely apathetic. Marcus has never recovered from the loss of Didyme (unknowingly at the hands of Aro) and accounts for his apathetic and callous ways. He voted against destroying Renesmee in an 'almost bored fashion', not even looking at the Cullens and their allies while doing so. The others of the Volturi seem to recognize this aspect of himself, as none of the Volturi reacted at all to his vote. Marcus' personality is unknown prior to the death of Didyme, but he apparently loved her deeply. Ever since her death Marcus has sunk in to an extreme state of depression and apathy and is barely alive even by vampire standards. His state of mind seems to have been made worse by the fact that Aro had Chelsea force him to feel loyal to the Volturi and it has resulted in him being locked in a permanent state of grief-related apathy. Marcus has the ability to recognize the types of relationships between people and their strong and weak spots. He usually shares this information mentally with Aro, by touching his palm, which is useful when Aro specifically wants something as he can use Marcus's power to determine who his enemies are and how close they are bonded to one another. He can also see if someone's loyalty is weaker than someone else's or if a new bond is being formed. He can identify bonds between several people at the same time.