1/20 Jurassic Park III Spinosaurus. The movie isn't very popular, and for good reason, but I think the Spinosaurus is one of the most intimidating dinosaurs the Jurassic Park franchise has seen. Have him bent down more standing over the broken plane with his mouth open and I think it would look insanely awesome. Especially those green eyes.
The pose I think would look best is similar to when he's down on all fours after killing the T-Rex. I'm picturing him leaning down on to the plane, turning around and roaring.