This game offers a lot of options. The first three rows of options underneath the scene are all good guys. You have over a dozen available poses for Sonic, Knuckles and Tails. You can add multiple poses of any character to create a sense of movement across your scene.
Below the good guys are some very formidable choices for bad guys. These include large machines, as well as several options like a flying bat.
The rest of the white area on the screen is occupied by additional accents for your scene. Whether you need a ramp for Sonic to spin up or a fireball to add drama to your scene, you can use any of these choices by clicking and dragging them into your scene.
Directions
Select: Left Click