This is Unicron's arrival goes in My Little Pony Transformers Prime: The Return of Harmony.

[The Autobots and ponies except Twilight leave the spot where the labyrinth was. Thunderwing approaches Twilight]

Thunderwing: Make sure to get everything ready for Unicron's arrival.

[Twilight nods and follows her "friends"]

[Unicron watches]

Unicron: Yes. Everything is going as planned.

[Unicron rises to the surface]

[The Autobots and ponies arrive at Twilight's castle]

Applejack: I can't believe that Twilight's acting the opposite of herself.

Bulkhead: Me neither.

Pinkie Pie: This has never happened.

Smokescreen: Yeah.

Rarity: If only there was some way to turn it around.

Bumblebee: [beeps] (translation: But how?)

Fluttershy: I don't know.

Ratchet: Don't look at me.

Rainbow Dash: Whatever. Let's just get inside and think this through.

Arcee: I'm with you on that one, Rainbow.

Optimus Prime: Agreed.

[As they prepare to enter, they see Twilight standing in the doorway]

Twilight Sparkle: Girls. Guys. Glad you could make it.

[As Twilight smirks evilly, she becomes gray]

[Unicron arrives in the throne room. Thunderwing and Twilight kneel to him]

Unicron: Rise, my servants.

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