[RD22]

Mythic Legions, Battle Tribes, Boss Fight (for scale), and Unimax Dino Warriors.
The Spy Monkey Creations Battle Tribes figures come with multiple heads and right now have a new Kadaf Zorr Goblin you should check out. A little pricey to army build, but kind of neat.
Ebay has a listing right now of a bunch of the Dino Warriors blue guys, just search "dino warriors" and it should come up a short ways down the list.