What Japanese rocket/missile is this?
 

I'm curious as to what Japanese missile or rocket this might be, if it is indeed a real rocket and not an original fictional design.

For a sense of scale the figure in the shot with it is an EVANGELION, a cyborg fictionally about 60-70 meters tall, from a very successful Japanese sci-fi property. This is a collector's action figure set. I was thinking of making an LPR of the rocket.

Anyone have any ideas?

It might be an amalgam but there is nothing specific that I can see. The custom is to stylize many pieces of hardware for the Gundam series until of course you hit Stratos 4 which uses the TSR-2MS. Essentially a TSR-2 aircraft with a large missile strapped on the centerline. And Zero Launch Length bottle to boot.