Luka was akumatized by Hawk Moth into Silencer, a voice-stealing supervillain, He has a brilliant cobalt blue skin and vivid emerald green eyes, retains his civilian hair, and he wore a brilliant purple, vivid yellow, brilliant gold, moderate heliotrope, and black bodysuit with a jagged mouth on his helmet.

XY complains that the costumes Marinette designed were hard to copy. In the middle of his rant, Silencer grabs XY's face, puts his fingers to his lips, and shushes, causing a purple jellyfish-like creature containing XY's voice to pop out of XY's mouth. Silencer absorbs it in his helmet. When XY tries to speak, nothing comes out.

Marinette runs away, You were the only one who was very scared.