Mental shield

Mental shield is the ability to have a shield that blocks any kind of psychic abilities from affecting a person's mind.

Users

 * Bella Swan (twilight)
 * Charlie Swan (twilight)

Bella Swan
As a human, Bella was immune to the psychic abilities of vampires. After she became a vampire, she was able to use her ability to protect the minds of others as well as her own. She also learned how to deactivate her ability and to allow psychic abilities to be used on her. When she used her ability to protect the Alpha in a werewolf pack, the entire pack of werewolves were protected from psychic abilities. When Bella is protecting others, anybody can walk up and through the shield, where their abilities will work on anyone inside the shield except for Bella, who has a constant shield in her mind that protects only hers. Bella's ability grew from her social awkwardness and her preference to be alone, just like her father who also possesses this power.

Charlie Swan
Charlie Swan possesses a similar power to his daughter, Bella, although his is much weaker than hers.