These are the original 32 Skylanders characters from Skylanders: Spyro's Adventure.
Each time a new Skylanders character is introduced it is considered a Series 1 figure. However, for the time being, I have chosen only to showcase the original Series 1 figures on this page.
All the New or Series 1 figures from Skylanders: Giants and Skylanders: SWAP Force can be found on their respective game pages.
Click on picture for more information and larger image.