Thief is a Dark-Type move introduced in Generation II. The user steals the Hold Item of its target whilst attacking it at the same time, provided the target is using a Hold Item. The user can't steal hold items if it has a hold item already, and the move fails if the target has the Sticky Hold Ability.
In trainer battles, the opponent's Hold Item is only taken temporarily.
Pokémon that Learn this Move via Level-Up