Some time ago I had tried to make a dungeon crawler with lineart graphics. They are made of eight blueish hues which were meant to replaced with "real" colors by the game engine. The idea was to make a "blue jelly" really blue, and a "yellow jelly" really yellow.

I assume they are useful as templates if someone wants to draw more detailed pixel monsters.

The size is chosen to match a 64 pixel isometric tile raster.