Item from Miraculous Ladybug by Thomas Astruc / ZAG
A damaged brooch that creates creatures from emotions — it put Emilie in a coma, it's slowly killing Nathalie, and Gabriel keeps using it anyway because grief doesn't do cost-benefit analysis.
The Peacock Miraculous creates sentimonsters — beings made from emotional energy that serve their creator. In its undamaged state, it would be a formidable but safe tool. Damaged, it slowly destroys whoever wields it. Emilie Agreste used it and fell into a coma. Nathalie took it up knowing exactly what it did to Emilie, because Gabriel needed her to, and Nathalie's love makes her willing to pay any price. She deteriorates throughout the series — coughing, collapsing, weakening — and Gabriel keeps accepting her sacrifice because his grief has consumed his ability to care about anyone but Emilie. The Peacock Miraculous is the show's cruelest symbol: a beautiful thing that kills the women who love Gabriel Agreste.
A brooch shaped like a peacock tail fan. When dormant: blue-green and elegant. When activated: glows with blue-purple light. The brooch has visible signs of damage — a crack or imperfection that manifests as physical harm to its wielder. It is beautiful and broken, like everything in the Agreste household.
Also known as: The Peacock Brooch, Nathalie's Miraculous