One of Tarantulas' bugs is implanted on Optimus, which allows Quickstrike to control him remotely. Megatron thinks of a way for his powers to be on par with Optimus.
Did You Know?
For whatever reason, the head of Optimus Prime looks much different than previously. It is less blocky, and more rounded, akin to the first episodes of The Transformers
(1984). It is easy to miss, since we only get to see him for a moment. See more
Megatron and Tarantulas both fall into lava and survive. Priorly, lava was seen as a lethally dangerous substance for the Transformers, and when Scorponok and Terrorsaur fell into a lava pit, they both died instantly. See more
You'll regret this, crab legs!
I regret everything, my sweet. Struggle as much as you like, I enjoy it!
References Enter the Dragon