This is more or less the anti-Inferno/Optimus (depending on your particular generation). A fire truck seems like a pretty strange choice for a Decepticon, but he pulls it off well. In fact, the facial sculpt is so well done, as are the colour applications, that in robot mode there's no doubt whose side Smoulder is on. Well, other than he bears a passing resemblance to Perceptor, but nevermind.
Now, what's really awesome about Smoulder is the addition of his weapon, 'Chopster'. Reminiscent of the original Targetmasters, Smoulder's axe is a mini-Transformer and character in his own right! Double cool for a discout price. Furthest more, whilst I'm unable to show it off (due to not having Bombshock), in another nod to Transformers of yore, Smoulder can combine as the central piece with another lot of combiners to form an entirely new gestalt! I've seen pictures; it looks like G1 Bruticus, it looks awesome, and it is on my wishlist.
There you have it folks. Evil fire engines? They're pretty hot right now :D