The enemy sprites can all be modified!

To change the green chaser frog:
- create a 16x16 image called "Chaser.png"

To change the red fire frog:
- create a 16x16 image called "Shooter.png"

To change the blue ghost frog:
- create a 32x32 image called "Ghost.png"

To change the saw blade:
- create a 32x32 image called "Bouncer.png"

:D