I know Hasbro have made there statement by saying it's Grindor in Revenge of the Fallen but what I've also found out that I didn't know was that in the internal files for the Revenge of the Fallen video game identify the character as Blackout, indicating that the game had been developed with the understanding that they were the same character. Also while the CH-53E Super Stallion features in Revenge of the Fallen supposedly as "Grindor" the vehicle mode has seven main rotor blades however in the film six rotor blades appear on his back just like Blackout. Also strangely his anti-torque tail rotor blade weapon in the film appears to have six blades like Blackout as well while a normal Super Stallion has four blades on the anti-torque tail rotor. Also when the Decepticons venture deep into the ocean to revive Megatron, the Navy crew tracking them reads five contacts. When they get down there, they tear apart one of the robots for parts to rebuild Megatron. Then as they rise to the surface, the Navy identify six contacts, rumors long ago said Blackout was the sixth contact. Also when Roberto Orci was asked about the character here was his reply. "Was that Blackout? Was he just revived off camera along with Megatron?" Also here is a few shots from the 2007 film comparing them to Revenge of the Fallen. Notice the MH-53 Pave Low Radar Bulb next to his head just like in the 2007 film. Not only that the Radar Bulb is seemingly rusty. Also notice a lot of his bolts and Armour is dirty and the fuse box (which is circled) is battered and rusty. Like mentioned in the post above the CH-Super Stallion has four blades on the anti-torque tail rotor but it is clearly seen here in the move the Character has six rotor blades just like Blackout in the first film. Not only his rotor blade seemingly rusty but a few main rotor blades on his back and a few pieces of his Armour are rusty as well. As seen in the first film when Blackout invades the Military Base the logo that appears on Blackout's arm is quite clearly seen on the Characters arm in Revenge of the Fallen as well. Basically everyone is entitled to there own opinions on this I guess, I know it's a topic that has been discussed countless times but it's just something I thought I'd post to see what people thought.