This page is for a concept/character/etc. that didn't become, isn't considered, or hasn't been confirmed canon in the Miraculous Ladybug Quantic Universe continuity.
Mercury was a character from the old, unused concept of Ladybug and Cat Noir being in a team of superheroes called the Quantic Kids. He is seen with Melodie and Sparrow, the other members of the team. However, the concept was discarded, and so Mercury never appeared outside concept art.
As a superhero, Mercury had dark blue/purple skin with white lightning bolt-like markings on where his eyebrows would be and on top of his head. In Thomas Astruc's early designs for him, his body had lightning bolt-like lines with light blue edges all over his body, meeting up and through dots on the back of his hands, shoulders, elbows, torso, and knees. His feet appeared to have had white shoe soles.
In concept art, it appears that Mercury had super speed.
|Super Lady Luck:||Older Version||Miraculous Mission Ladybug:||Absent|
|Throwdown!:||Absent||Ladybug Contra os Vilões:||Absent|
|Miraculous Ladybug & Cat Noir:||Absent|
- While an image of Mercury appeared in the first version of the Super Lady Luck slot game, he doesn't appear in the current version.