Transformers Magazine, The (UK) #97

Meanwhile, Megatron has become increasingly paranoid about Optimus Prime, even attacking his own troops who dare to suggest that they will be able to defeat the Autobot leader. Alarmed by Megatron's behavior, Soundwave, who is acting as a double agent working for Shockwave to overthrow Megatron, decides it might be time to remove Megatron for good. He persuades Megatron to call in the Predacons from Cybertron to weaken Optimus Prime, so that Megatron may close in for the kill.