Want to be sure I'm reading it right: If I fire the Bombadier, it will roll 4 blue dice against all targets in the burst 2 radius? Considering that the equal-cost SlowPokes are 3 blue dice against just 1 target, and that these two units both cost 1 skull, seems like the bombadier is way stronger. Or am I misreading this?
Or perhaps this was to help out the Turtles who in general are weaker than the Kobolds? (Slower, generally less armor and the MOB ability is pretty handy).
The Slowpokes are mostly used to augment the attacks of the roller and crusher. Being in shell mode makes both of them much stronger.
The turtles are a bit more complicated than the Kobolds because it's more about positioning and timing than the group up and mob someone style.
Also the turtles all have at least 1 white armor and are immune to most applications of status effects, so they are slightly more durable than the Kobolds.