Tori-bot Sketches

As an artist, there's a lot of sketches Akira Toriyama must have done during, and even after, his run on Dragon Ball. If you look on the web, you can find sketches where Toriyama was trying to find the correct look for Freeza, teenage Gohan, Super Saiyan 3 Goku, among others.
So, if you like sketches from your favorite authors, like Toriyama, perhaps this wallpaper may be for you...?
The drawings were all made by Toriyama, as well as his signature. This lowly-self only put all of it together for this wallpaper