Risotto figures out that Doppio must be a Stand user that the boss trusts in deeply because he’s able to hear the noise from a certain Stand. Risotto then uses his Stand Metallic against him. Metallic is able to control magnetic force and attacks Doppio. Doppio uses the part of the boss’s power he received from him. While they’re fighting, Risotto realizes that Doppio’s personality and actions seem to be changing and he realizes exactly who Doppio is.
that you were no longer 
an enemy he could handle.
أنّك لم تعُد عدوّاً يستطيع هو مُواجهته
dass du kein Gegner bist,
mit dem er alleine klarkommt.
que eras demasiado para él.
que eras demasiado para él.
que tu étais trop fort pour lui.
che tu non eri più un nemico
di cui potesse occuparsi lui.
Você era um inimigo
além da capacidade dele.
что сам он с тобой уже не справится.