This is how Starscream appoints himself as the new Decepticon Leader goes in episode 6 of Season 1 in Ryan F-Freeman's Adventures of Transformers: Prime.
[The episode opens on the Nemesis, where Starscream is watching the explosion of the Spacebridge]
Starscream: Such a shame. But I assure you, Megatron, you certainly made a grand exit.
Starscream: Ah Soundwave. You finally made it. I wish to address the troops.
[Ryvine walks in]
Ryvine Sparkle: Hello. Starscream. Where are Evil Ryan and his two friends?
Starscream: You must be Ryvine Sparkle.
Ryvine Sparkle: Indeed I am.
Starscream: Well, I may as well introduce you during my speech to the troops.
[Vehicons are in the hall, when Starscream's face comes up on screens all over the ship]
Starscream: The loss of Megatron, leader of the Decepticons, was a terrible experience. But we still need a leader. Which is why, I, Starscream, will be taking leadership. All... Hail... Starscream!
Vehicon: [raises his hand to ask a question] Excuse me, Com... uh, I mean Lord Starscream.
Starscream: Yes, yes. What is it?
Vehicon: If we failed to conquer Earth under Lord Megatron's command, what hope do we have now while the Autobots still defend it?
Starscream: [growls] Allow me to be crystal clear: I studied for millennia under our former master, thus I am equipped to lead you. I, Megatron's true heir - Lord Starscream, EMPEROR OF DESTRUCTION!
[The Vehicons begin to murmur]
Starscream: [snarls and angrily storms out] What use are troops who can't rise to the task of inflicting unspeakable destruction in my name?!
Ryvine Sparkle: Ahem. I think I may have a solution.
Starscream: Let's hear it.
Ryvine Sparkle: Well, if you find a Cybertronian buried in this planet's earth, you may get the respect.
Ryvine Sparkle: And I know how to help us. [sings] Oh Twivine~
Twivine Sparkle: Yes, brother?
[Ryvine whispers about his solution to Starscream's problem]
Twivine Sparkle: Hmmm, I don't know where one is, but I know someone who does.
[at Starling City]
[Ryvine and Twivine teleport themselves, the Cyberlings, Soundwave, and Starscream at an apartment building]
Evil Anna: You sure we're in the right place?
Twivine Sparkle: Yep.[knocks on a door on the top floor]
[the door opens and inside is Slade Wilson]
Evil Ryan: Why is Twivine teleported us here?
[Bertram then notices that Slade is taking his hand away from gun hidden behind his back]
Slade Wilson: Hello, Twivine. Been a long time, hasn't it?
[The Cyberlings teleport out of Starling City]
Twivine Sparkle: Yes.
Ryvine Sparkle: Hello, Slade.
[he lets them in and pours them tea]
Slade Wilson: What can I do you in for?
Ryvine Sparkle: Well. It's that Megatron is now been exterminated. [pulls out a shard of Dark Energon] I did know that the solid form of this stuff is known.... as the blood of Unicron.
[Soundwave plays what Starscream said]
Soundwave: [in Starscream's voice] But, it is said that his blood is the anti-spark.
Slade Wilson: Then what is it that tells me this isn't what you came for?
Ryvine Sparkle: Wow, you're good. Anyways, we need your help finding a Cybertronian that's been-
Slade Wilson:[pulls out a box of government files and tosses a file to them] That what you looking for?
[they open the file, showing a Cybertronian object, and an X-Ray of the Con inside it]
Starscream: Where did you get this information?
Slade Wilson: Used to be in the army. After I became a mercenary, I collected information on things the world tried to cover up from the eyes of the public.
Twivine Sparkle: Told you this was the right guy.
Slade Wilson: Wouldn't mind if I joined you and your friends, would you?[bends down to get something]
Ryvine Sparkle: Why?
Slade Wilson:[comes back up with a sword and sharpens it] To see how Ryan and his friends deal with me.
[after a moment of silence, the villains smirked and agreed]
Slade Wilson: I'll just be a moment.[opens a closet and we see his Deathstroke costume] Nothing hurts worse than the stroke of Death.
Twivine Sparkle: Yes.
[screen goes black]