Sprite corruption

Hi. I am creating a 2D game, and upon importing the spritesheet, I find that it is corrupted. Here are the images of what it looks like in piskelapp, and in photoshop, and then in unity. The only thing I have done to cause this, was importing the image. It is a png file, so I dont know why this is happening.

Ignore the green lines in the second photo, that is just the slicing.