Its a damn shame this design of yours isn't being used in an actual Tokusatsu series, though that might be a small mercy, considering how 'toyetic' those shows have become today. And this awesome robot kaiju would have very little screen time, only to transform into a slightly boring humanoid mecha.
But seriously, I'd love to see Cosmosaurus Rex throw down with any number of Kaiju villains and opponents, famous and obscure alike!