Megatron disbands the Decepticons/Sunset volunteers to teach Megatron about friendship

Optimus Prime: As a being comprised of pure energy, Unicron's Antispark was vulnerable to this reliquary of the Primes.

Smokescreen: But if he's in there, where's-

Starscream: Praise the Allspark! Master! You're alive!

Megatron: Indeed.

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!

Megatron: No!

Starscream: What? Why?

Megatron: Because I now know the true meaning of oppression and have thus lost my taste for inflicting it.

Starscream: Uh, you've clearly been traumatized, master. A good power-down and astroll 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.