Unity 2d Sprite size

I am creating 2d platformer game and I want my enemies sprite be a little bit larger than my main hero. Should I change Pixels per Unit for my character or change the scale?

I would change pixels per unit, since the scale can have side effects when multiple transforms are parented together and they might or might not inherit scale etc. Pixels per unit is just a little more straight forward, but of course it’s not dynamic, meaning you have to set it in the editor and can’t change it during runtime.