This is how Metroplex Heeds the Call goes in My Little Pony Transformers: Fall of Cybertron.
[Starscream, Onslaught, and Brawl bring in Optimus Prime and Twilight]
Starscream: Megatron, look who we found.
Megatron: Optimus Prime and Princess Twilight Sparkle. That is what they call you now isn't it?
Optimus Prime: Indeed.
Megatron: This is what you chose, Prime, when you defied me. All of this is your doing!
Optimus Prime: Megatron, stop!
Megatron: I'll stop when all of you are dead!
Optimus Prime: This is meaningless. All we want is to leave!
Megatron: Charge up the Warp Cannon! Wipe their precious Ark off the face of Cybertron.
Decepticon: Yes, sir.
Megatron: No one leaves without my permission!
Optimus Prime: I wasn't asking.
Megatron: Always defiant to the end, aren't you Prime and Sparkle? At every turn you have thwarted my efforts to save this planet, to return it to its former glory. [As he is talking, no one notices Metroplex rising outside] No more! This day it all ends Prime and Sparkle! Once and for all!
Soundwave: Megatron, look out!
Megatron: Stop running you fools. Stand and fight.
Metroplex brings his fist down on Megatron thrice, killing him]
Optimus Prime: Leave. NOW.
Starscream: Decepticons, Megatron has perished, betrayed by his foolish pride! I, Starscream, am your leader now! Decepticons, return to base!