Just to elaborate on the image format issue, you shouldn't use JPG for images that have less than 256 colors. They get messy because of the JPG artifacts.
For pixely images (less than 256 colors), you should use GIF. It maintains the exact pixels without any artifacts. They retain the look they were originally given.
Personally, I would use a bit less saturated colors to convey the horror game atmosphere. I mean, the second character has the most vibrant red and blue, for example, which are kind of opposite of scary.
The overall look for the characters is really good though. The shapes are really nice.
For pixely images (less than 256 colors), you should use GIF. It maintains the exact pixels without any artifacts. They retain the look they were originally given.
Personally, I would use a bit less saturated colors to convey the horror game atmosphere. I mean, the second character has the most vibrant red and blue, for example, which are kind of opposite of scary.
The overall look for the characters is really good though. The shapes are really nice.