How to make smaller sprites not blurry?

It seems whenever I import smaller sprites (12x12, 16x16, 32x32) and scale them up they are very blurry. Is there a way of fixing this without having to make the image itself 4 times bigger before hand?

On the sprite itself, change the Filter Mode to ‘Point.’

It can also help if you change the format to 16 bit.

Uncheck Generate min map and set format to TrueColor

Changing the override for the platform you want seemed to help as well. I maxed it out at 8192: