Hideo Kojima posted some pictures on his Twitter of a Metal Gear REX model prototype. Needless to say it looks beyond awesome, but the pictures speak for themselves.
Aside from the actually working lights, parts can be taken off so it resembled the REX in MGS4, and the beak can open as well.
According to Kojima, the final model will look ‘much much better’, but the question is: how?
Source: Kojima’s Twitter