Not really a KO, but an original figure from a different line. This is Quantum Heroes Mosa Storm. I ran across him on Amazon when buying something else. For $40, I decided to take a chance.
He's right at Leader scale, perfect for being a Decepticon counterpart to the SS Dinobots
Very nice figure, especially $40. Articulation is great, only missing wrist swivels to be pretty much perfect. Plastic is a bit on the softer side compared to Hasbro, but it's not like, shampoo-bottle plastic or anything.
Transformation-wise, he's kind of a triple changer? He converts from robot mode to a futuristic tank / armored car type thing that looks like something Shockwave would turn into:
The missile / gun things can come off and be moved to other ports if desired.
He then has several accessories (head, tail, and fins) that can be attached to the vehicle to turn him into a mosasaur, or at least some sort of mosasaur-mobile.
When in robot mode, the mosasaur bits become his scythe and wings, or can be combined in other arrangements as various knifey-stabby things. All in all, a pretty good figure for the price and a great Evil Dinobot!