I filled out my little Skylander army with some more (for a total of 16).
Sonic Boom: Air Type that is a griffin, it's roar attack is pretty good, and it also spits out eggs that hatch into tiny griffin buddies.
Stump Smasher: Life Type basically a walking tree, that has hammer like weapons, it can also spit out acorns for ranged attack.
Double Trouble: Magic Type sort of a witch doctor looking character, it's staff is really cool cause it's like a laser beam that automatically locks onto enemies so you can strafe, it also has exploding mask helpers.
I beat the game already, I just am going through & trying to get 100%.
currntly at about 96%. I took a couple of the Skylanders through most of the Heroic Challenges that I have (you get one with each new figure).
Stealth Elf is powered up with all 16 done (though she is not fully powered cause that would take all 32 to do), Sonic Boom did 15 of them, and some of the others have done a few.
Toho's Godzilla Will Live Forever!