Besides Tonberry and Behemoth, the Iron Giant is just one of the returning enemy creatures in Final Fantasy XV. We've seen gameplay footage of Noctis fighting the huge enemy before, and it's fascinating to see how graphics have evolved.
YouTuber RinoaMoogleGames put together a video that highlights the Iron Giant from various Final Fantasy games. In FFII and FFV, ts design looks mostly the same, a huge 2D metal beast with a giant sword. Then we see the Iron Giant transformed into 3D in Final Fantasy VII. The 3D models in FF VIII, IX, X, XI, XIV and XV all show how technology has evolved over the years. Watch the video below: