Going to render the pixel art the right way and then look into making my NPCs wander.
Rendered my sprites correctly.
-Set Pixels Per Unit to the largest dimension of my characters. All of my characters are 32×32 pixels, so this was 32.
-Set Filter Mode to Point (No filter). This prevents Unity from averaging pixels together to keep our art sharp.
-Set Max Size to the size of our sprite map rounded up. This was around 512.
-Set Compression to none. Compression only works properly with photos and the like where there are a wide range of pixel colors and high resolutions.
Found the NPC wander tutorial. Will continue implementing tomorrow.