This is how Megatron disbands the Decepticons and Starlight volunteers to teach Megatron about friendship goes in Thomas and Friends: Transformers Prime: Friendship is Magic: Beast Hunters: Predacons Rising.
[The light fades and Thomas stands rubbing his head]
Optimus Prime: As a being comprised of pure energy, Unicron's Antispark was vulnerable to this reliquary of the Primes.
Twilight Sparkle: And I'm glad Thomas pulled through.
Smokescreen: But if he's in there, where's--
Starscream: Praise the Allspark!
[Starscream arrives and transforms beside Megatron]
Starscream: Master! You're alive!
Starscream: Your new battle armor will take things to the next level, My liege. Together we will reunite all Decepticons and once again grind Cybertron under your mighty heel!
Starscream: What? Why?
[Megatron walks then stops and looks at Optimus]
Megatron: Because I now know the true meaning of oppression and have thus lost my taste for inflicting it.
[Optimus stares on]
[Starscream looks shocked]
Starscream: Uh, you've clearly been traumatized, master. A good power-down and a stroll around the smelting pit will put you back in touch with your inner warlord.
Megatron: Enough! The Decepticons are no more and that is final.
[Starlight thinks, has an idea, and walks up to him]
Starlight Glimmer: Megatron, there's something I need to ask you.
Megatron: I'm listening.
Starlight Glimmer: Would you like to give friendship another try? [holds out her hoof]
Megatron: Yes. [shakes her hoof]
Starscream: Yes. Well, we all have plenty to think about, don't we?
[Starscream flies to Darkmount]
Starscream: This is not quite how I envisioned my rise to the throne, but since Lord Megatron all but surrendered it to me, I will gladly revive the Decepticons in my name.
[He sees the Predacons and screams]
Starscream: Though perhaps a throne is more befitting of an actual King.
Predaking: I am not here to seize thrones, Starscream but to settle scores.
[They begin attacking him. Meanwhile]