"You say that I'm evil, that I'm a menace. But I will tell you now: you're absolutely right!"
~Endgame, Death of Hope
Endgame is an dark twin upgraded version of the sympathetic, empathetic, and the most intelligent Dinobot, Swoop. Shockwave planned on making alter egos of all the Dinobots, but Endgame was the only one created before the Autobots shut down Shockwave's little scheme. Endgame has a sleeker, darker paint job than Swoop, with complete Decepticon colors.
"I am better than you in every way: intelligence, strength, and of course, looks!"
~Endgame to Strafe, Antithesis
Endgame has no robot mode, as he deems it a 'pointless hindrance.' Despite this, Endgame still has two different forms, one of a modified robotic pteranodon, and the other of a dragon just as strong and handsome as Predaking (and I mean that in a good way; I love Predakings alt. mode!)
In his pteranodon form he has spikes running down both his wings and his body is not as bulky as his Autobot counterpart. He has a purple strip running along the front of his beak running back until it splits at his wings and highlights where the membranes would have been in a normal pterosaur. He has a unique insignia on both his wings that glow purple. His body is black with purple streaking about in some places. He has purple and red eyes. His beak is purple and black at the end.