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.
You may have figured out what 
Metallic is, but it's too late.
لعلّك اكتشفتَ ماهيّة ميتاليكا، لكن فاتَ الأوان
Du magst erkannt haben,
was Metallic ausmacht, aber es ist zu spät.
Pero aunque hayas descubierto el poder
de Metallic, es demasiado tarde.
Pero aunque hayas descubierto el poder
de Metallic, es demasiado tarde.
Mais comprendre le fonctionnement
de Metallic ne te sera d’aucune aide.
Ma anche se hai capito quali sono
i poteri di Metallic, è troppo tardi.
Você descobriu o que o Metallic faz,
mas já é tarde demais.
Может, ты и выяснил, как работает 
моя Металлика, но уже поздно.