Episode: Possession
Megatron listening to Starscream-wearing-Waspinator.

Episode: Power Surge
Dodging a missile.

Episode: Spider's Game
Preparing to blast someone or giving orders. We forget. Looks cool, though.

Episode: The Spark
Saying something unpleasant about Tarantulas.

Episode: Victory
In which Megatron has just dodged Dinobot's optic-lasers by duck-and-rolling behind a rock. Here he recovers from the roll and prepares to shoot from cover.

Episode: Victory
Megatron posing, probably about to bring hurt on someone.