Fact: The Fallen is a figure spotlighted in DreamWave comic in 2003 - 2004. I think it was writted by Simon Furman the comic writer who also created the names "Sentinel Prime" and "Primus". Ehren Kruger copied the Fallen character in Revenge of the Fallen. Spoiler Now: in DOTM, Sentinel Prime is similar to Ultra Magnus in Dreamwave comic. I have forgotten the title of the Dreamwave comic saga ,, but the Dreamwave plot was this. Autobots and Decepticons are fighting on earth. Then Shockwave arrives in a ship and takes over the Decepticons. Then Ultra Magnus came to tell the autobots on Earth to surrender. Magnus and Shockwave had 'reconciled' and combined forces for the greater good of Cybertron, and all autobots and cons on cybertron are now united as "Cybertronians". Some of the CYbertronians include triple changers and Wreckers. Magnus even takes Prime and his troops as prisoners. But in the end, they found that Shockwave was using Magnus for his own agenda, and all hell breaks loose between the Autobots and Decepticons. Before Magnus dies, he asked for forgiveness from Optimus, saying he joined Shockwave only because he wanted peace for Cybertron. I think Kruger copied part of this story, and instead of using Magnus, he uses Sentinel Prime, since Sentinel prime name was tainted in 'Transformers Animated". That's probably why Ultra Magnus name was seen in an early cast calling sheet. Either that or he's heavily influenced by that in the sense that Wreckers, Shockwave, Magnus/Sentinel, Autobots working with Decepticons for the greater good of Cybertron appears in the plot.