Afton

Afton is a vampire.

History
Afton joined the Volturi when he became Chelsea's mate. She then demanded that the coven have him added since he wasn't gifted enough to earn a place within the coven on his own merits. Because Chelsea's power was the key to the coven's co-existence, order and success throughout the centuries, Aro always gave her what she wanted, and so Afton was kept throughout the centuries.

Family Members

 * Chelsea (mate)

Powers and Abilities
Afton's gift is to make himself mentally invisible to his pursuers. Someone who hides behind him will also be invisible. However, his power is much more limited than most of the other Volturi guard's gifts; any person with enough focus can easily see through his shield and he can only make himself invisible.

Since this power works on a mental basis, it can be rendered impotent by Bella Swan's mental shield.

Source

 * Twilight Saga Wiki: Afton