This is how Megatron captures Twilight goes in My Little Pony: War for Cybertron.
[Megatron looks at Twilight]
Megatron: The Alicorn I heard so much about. Optimus Prime. [aims his fusion cannon at Twilight] Where is he?
Twilight Sparkle: [pretending to be confused] Huh?
[Megatron realizes something]
Megatron: The Dark Energon. You've seen them.
[Suddenly, a Decepticon trooper arrives]
Decepticon Trooper: Lord Megatron, Autobots are attacking. We need reinforcements.
Megatron: Pull the division out. Forget Optimus Prime. We have what we need.
[Megatron grabs Twilight and the Decepticons start to retreat. Rainbow Dash, Pinkie Pie, Rarity, Applejack, and Fluttershy see Megatron holding Twilight]
Rainbow Dash: Hey!
Pinkie Pie: Get back here, you big metal creep!
Rarity: Put her down!
Applejack: Nopony messes with Princess Twilight like that!
Fluttershy: Let her go!
[Megatron just ignores them and keeps running]
[Optimus Prime arrives]
Optimus Prime: Megatron. Let her go.
Megatron: Optimus Prime.
Optimus Prime: Yeah.
Megatron: You're the one of whom the ponies spoke?
Optimus Prime: Yes. Now, release the princess.
Megatron: You think I'd fall for that?
[Twilight finds herself in a cell in Kaon]
Twilight Sparkle: What the...?
Megatron: You're my guest.
Twilight Sparkle: Huh?
Megatron: Tell me about Optimus Prime.
Twilight Sparkle: Never!
Megatron: Come now, Twilight. I know you were once a Unicorn. And that you were betrayed during that Canterlot Wedding Changeling invasion incident.
Megatron: With Dark Energon, I can restore Cybertron to its former glory and you to yours, if you agree to serve me.