Hi,
Thank you very much for the detailed feedback and for taking the time to share the screenshots. They helped clarify the situation considerably.
After reviewing the images provided, the main point is that the graphics being used in the tests correspond to the RPG Maker 2000 version of the asset pack, which is being imported directly into RPG Maker MZ.
The packs are structured differently depending on the RPG Maker engine they were developed for. Higher purchase tiers include versions adapted for more modern engines, while the RM2K version specifically follows the formatting standards of RPG Maker 2000, since it is a much older engine.
Because of this, RM2K graphics are unfortunately not directly compatible with VX Ace, MV, or MZ without a proper conversion/adaptation process. These engines use completely different standards for tilesets, autotiles, character sheets, sprite directions, transparency handling, and tile scaling/rendering systems overall.
For example:
RPG Maker 2000 uses 16x16 tiles and an older sprite organization format.
VX Ace uses 32x32 structures and a different autotile system.
MV/MZ use 48x48 tiles with completely different sheet organization and rendering expectations.
Although MZ allows projects to work at scales similar to older engines, the image files themselves still need to follow the correct structure and formatting standards for the engine being used.
This is why the tiles appear fragmented, misaligned, or incorrectly scaled in MZ regardless of the scaling settings selected.
Regarding character directions specifically, the sprite arrangement used in the RM2K version follows RPG Maker 2000 conventions and therefore does not automatically match the layout expected by newer RPG Maker engines.
The transparency issue is also related to the older image formatting standards used by RM2K-era resources.
That said, we truly appreciate you pointing out the .PNG/.png filename issue. That detail has already been corrected in the updated files.
Thank you again for your patience, feedback, and for taking the time to test everything thoroughly. The screenshots were genuinely helpful in identifying the source of the compatibility confusion.
Below are examples of how resources are used correctly in RPG Maker VX Ace (32x) and RPG Maker MZ (48x, the same as MV as well, although as mentioned before it is possible to use smaller scales in it).

