Telepathy is an ability introduced in Generation IV. So far, 4 Pokémon have this ability.
A Pokémon with Telepathy avoids damaging moves used by its allies. This includes attacks with multiple targets (such as Discharge), as well as attacks exclusively targeting an ally with Telepathy (such as Thunderbolt). However, it is not protected from its allies' status moves(such as Confuse Ray).
When Telepathy prevents an attack from hitting, the message "<name> avoids attacks by its ally Pokémon!" will be displayed.
Outside of battle
Telepathy has no effect outside of battle.
Pokémon with Telepathy