The person hiding in the mirror was Illuso from the Hitman Team. Fugo ends up being dragged into the mirror by Illuso's Stand, Mirrorman. Fugo then summons his own Stand, Purple Smoke. Despite Giorno wanting to find Fugo, Abbacchio decides to go look for the key, since that was their mission. However, once Abbacchio finds the key, he also gets dragged into the mirror world...
Now your Stand won't be able to move!
والآن الستاند الخاص بك لن يتمكّن من التحرّك
Somit kann sich auch dein Stand
nicht mehr bewegen.
¡Ahora ni tú ni tu Stand podrán moverse!
¡Ahora ni tú ni tu Stand
podréis moveros!
Vous pouvez plus bouger,
ni ton Stand ni toi !
In questo modo neanche
il tuo Stand potrà muoversi!
Agora seu Stand não vai
mais conseguir se mexer!
Теперь ни ты, ни твой стенд
никуда не денетесь!