There has been a lot of debate on this on these boards. So, I just saw the movie today and this is definitely what happened: Que/Wheeljack was killed by BARRICADE! However, while Barricade was speaking before blasting Que.......it was Soundwave's voice. Soundwave and Barricade both look a heck of alot alike. So to believe that it was Soundwave that killed Que is understandable, especially since it was soundwave's voice. But it was also Barricade's model. If it appeared as Barricade, then it was Barricade. They just ran out of voiceactors and it was probably meant to be Soundwave. So......yeah I made this topic just to clear that up!