Unseen Fist

Contact moves can strike through Protect/Detect.

Game descriptions

B.Diamond
S.Pearl
If the Pokémon uses moves that make direct contact, it can attack the target even if the target protects itself.

Other languages

EnglishUnseen Fist
SpanishPuño Invisible
ItalianPugni Invisibili
Japaneseふかしのこぶし
GermanVerborgene Faust
FrenchPoing Invisible