This is how Twilight vs Thunderwing: Maretropolis Battle goes in Twilight Sparkle vs. Thunderwing.
Twilight Sparkle: Thunderwing, what have you done?
Thunderwing: Princess Twilight! This is why only fools are heroes! Because you never know when some lunatic will come along with a sadistic choice: Let the friends you care about die...or see your number one assistant die. Make your choice, Princess Twilight... and see how a hero is rewarded.
Twilight Sparkle: Don't do it, Thunderwing!
Thunderwing: We are who we choose to be. Now, choose!
[Twilight tries to think and has a thought]
Thunderwing: What's it gonna be, Princess?
Twilight Sparkle: I choose... neither.
Twilight Sparkle: I know what you are trying to do.
Thunderwing: And that would be?
Twilight Sparkle: Trying to get me to join you.
Thunderwing: How right you are, my little pony.
[Thunderwing then drops Rainbow Dash, Pinkie Pie, Rarity, Applejack, Fluttershy, and Spike]
Twilight Sparkle: No!
[Twilight stares in horror]
[Twilight uses her magic to grab her friends]
[Thunderwing then unfurls his wings and flies to Twilight and punches her, making her lose focus, but uses her magic to grab her friends again.]
Thunderwing: It's time to die! [unearths a sword]
Twilight Sparkle: You need to know what's good for you!
[Thunderwing flies to Twilight and prepares to finish her with his sword, but she produces a ray of extremely strong magic]
Thunderwing: Where did you get that power?
Twilight Sparkle: I gained it from Zeta Prime himself.
Thunderwing: Zeta Prime?
Twilight Sparkle: Yeah.
Thunderwing: Who is this Zeta Prime?
Twilight Sparkle: The original leader of the Autobots.
Thunderwing: Are you telling me that Optimus was not the leader from the start?
Twilight Sparkle: After Zeta died, he became the leader and Zeta's ghost gave me the power to overcome any challenge you throw at me!
Thunderwing: What amazing power. I must have it for myself!
Twilight Sparkle: If you want it, come and get it!
Twilight Sparkle: [flies away]
Thunderwing: [chases her]