
In Clair Obscur: Expedition 33, there are lots of mysterious creatures and enemies you come across on your journey. However, not all of them are hostile, and in the Flying Waters area early on in act one, you come across a Demineur missing its mine. While you can attack it, you can also help return its bomb to unlock an excellent early-game weapon.
You can find the Demineur towards the end of the area, after the Noco’s Hut expedition flag. Instead of heading up to the left to progress, make your way to the back of the area and walk through the huge opening ahead—you'll find this white Demineur floating by itself.