The Bones miniatures are perfect for RPG sessions where you need some minis on the grid fast. The paint jobs don't have to be showcase quality, but they can be better than those D&D prepainted minis. They are nice too because you can build up lots of monster lists and not spend a lot of money like you would hunting down the prepaints on the internet.
The kobolds are clearly out of their minds for taking on this purple worm. I'm sure the worm is quite excited to have six tasty snacks along with a little metal fiber to wash them down.