Wikipedia.org wrote:However, they refuse to speak long enough for Prime's secret plan to take effect - launching the Allspark into outer space. Megatron attempted to pursue it, but Bumblebee stops him. An enraged Megatron crushed Bumblebee's voice capacitor, promising to seize it for himself eventually.
Hardtop's Bio wrote:The two robots have played a punishing game of cat and mouse across the breadth of the galaxy; it is a little known fact that it was a shot fired by HARDTOP that took away his AUTOBOT enemy's ability to speak without pain.
It's almost as bad as the Origin Of The Constructicons.