United Gacha Alliance
The United Gacha Alliance was made on r/place, then moved to pxls.space near the start of Canvas 71. They started with a bad first impression by placing their art over already existing art that was being made, but after getting backlash from the community they moved to a smaller location that didn't go over anyone, causing their art to survive to the end of the canvas.
The smaller art they constructed was originally downscaled incorrectly which caused a few pxls users to grief it. The art was later changed to the correct scale.