Alec

The Volturi had their eyes on Jane and Alec, but were waiting until they were older to change them. When frightened humans burned them at the stake, Aro was forced to change them while they were still young

Special Talents: Alec’s gift is more potent than Jane’s. He has the ability to cut off a person's (or a vampire's, werewolf's etc.) senses; i.e. He can make them blind, deaf, mute, unable to feel a thing and unable to smell anything. When he uses his gift, it appears in the form of mist. When he attempted to use it on the Cullens, the Vampires they had gathered as witnesses, Sam Uley's pack and Jacob Black's pack, the 'mist' slowly crawled towards the group. Upn hitting Bella's 'shield', it went around it, before disappearing after Alec stopped using his gift after realising it was useless.

Physical description
Nearly identical to Jane with slightly darker hair and lips that aren’t as full.