Statements and publications aside, there is no other logical conclusion than that the Nemesis is still Trypticon in TFP, and that he does reawaken for Flying Mind. When Trypticon was last seen, he was converted into the Nemesis and locked in permanent stasis. That's established in Fall of Cybertron. If we consider the presented properties of Dark Energon in Transformers Prime, we know that It reanimates dead Cybertronians, which display no retained sentience from their living form. Resurrected bots either independently seek out and destroy lifeforms fueled by regular Energon, or follow the command of the Dark Energon fueled lifeform that resurrected them. Dark Energon gives sentience to inorganic, electronic technology Dark Energon repairs damaged Cybertronians In Flying Mind, after the Nemesis is catastrophically damaged by Bulkhead, Megatron puts Dark Energon into the ship's Energon Core to expedite the ship's repair because he knows that it repairs damaged Cybertronians. The ship is repaired, but is now sentient, operating with a will of its own. Megatron, despite being infused with Dark Energon, does not share the same symbiosis with the Nemesis as he did with the dead Cybertronians that he resurrected - and so he is unable to control the ship's will. The Nemesis, now acting with its own will, speaks. Now, consider Trypticon speaking in War for Cybertron. The two voices are undeniably similar, though Trypticon is voiced in WFC by Fred Tatasciore, and the Nemesis voice in Flying Mind is provided by Bulkhead's Kevin Michael Richardson. Given what is established by the series about Dark Energon, we know that it Gives life to regular electronic devices Repairs damaged Cybertronians Resurrects dead Cybertronians Since the Nemesis is Cybertronian technology powered by Energon, we can assume that its sentience is not granted by the Dark Energon. Since Megatron is unable to control the ship, we can assume that it is not a resurrected Cybertronian. Since Trypticon was last seen damaged but alive, and being placed into permanent Stasis Lock, we can assume that the ship's sentience is due to the Dark Energon's ability to repair damaged Cybertronians. Based on those details, the extremely similar voices used, and the designs existing for Trypticon's TFP rendition, the only logical outcome is that the ship is Trypticon.