Question: where are all the mimics in dark souls 3?
Answer: High Wall of Lothric. Inside the room that's beneath the Dragon that breathes fire at you. ... 
Cathedral of the Deep. ... 
Catacombs of Carthus. ... 
Irithyll of the Boreal Valley. ... 
Irithyll Dungeon. ... 
Profaned Capital. ... 
Lothric Castle.