Photoshop :: Laptop Multiple Backgrounds

I want to throw together a few Sonic pictures that will alternate every so often for the background of my laptop. The first attached picture of sonic (Blue hedgehog) is what I currently have. I like the simple style of the picture.

How to keep the background fully black. Change the colors of the 'lasers' to a color suitable for the other charters and then replace sonic for that character in a similar size?

For example.

Red lasers + Knuckles the echidna
Orange lasers + Tails the fox
Grey/red + Shadow the hedgehog
White + Silver the hedgehog

If you see where I'm going with this. I don't want the character pictures to look cartoony I want the pictures created to be as similar to the original sonic picture as possible and I'll attach some pictures of the other charters to show you who they are and the kind of thing I want.

Also If you look at the original sonic picture his hands and feet look a tiny bit blurred. If the picture looks like it contains movement could you add slight blur to emphasize that.

4 pictures altogether if allowed. Similar to the sonic one. Different colored laser. then picture of the other characters replacing sonic.