Hello All

My cousins son really wants a ratchet and clank cake... I am considering trying to make 3D edible versions of Ratchet and Clank but they have so much detail I am not too sure (especially Ratchet)...
I don't want edible images or anything like that, and I want a "popping" cake...
My vision was a 3D EDIBLE versions of them with nuts and bolts flying out of the cake...
Anyways, anyone have advice on how to make them?
Or maybe another idea?

Thanks!