Actually the first piece of Halo content available to the public was Halo: The Fall of Reach. [quote]I agree that Halo 3 and Reach grunts differ more, but yet again, not very different to the H4 Grunts model.[/quote]The thing that changed with the Halo 4 grunts was higher graphical fidelity and light grey skin. Halo 3 and Reach have the odd ones out and it ticks me off the community is so hypocritical about the changes.