This is how Optimus assigns the Autobots to their pony friends goes in Darkness Rising Part 2.
Optimus Prime: Bulkhead, accompany Applejack home. And maintain covert surveillance in vehicle form.
Bulkhead: Got it.
Optimus Prime: Bumblebee, you'll watch over Rarity.
Bumblebee: [beeps] (translation: Awesome.)
Optimus Prime: Arcee, you'll accompany Rainbow Dash.
Rainbow Dash: [sighs in frustration]
Optimus Prime: Smokescreen, you'll be siding with Pinkie Pie, although she may seem like a handful.
Pinkie Pie: Yay!
Optimus Prime: Ratchet, you'll be watching over Fluttershy.
Fluttershy: That's nice.
Optimus Prime: I will be watching over Twilight.
Twilight Sparkle: I'd like that.
Major Malfunction: And I'll be keeping a close eye on Canterlot Castle. It's the obvious symbol of hope in this world, making it a huge target.
[They all nod in agreement]
Apocalypse: And I will track down this King Sombra and Lord Tirek. I shall only take their chi as a last resort.
Nighlock: Good luck, my friend.
[After he left, Deadpool put on an afro]
Deadpool: Let's go kill some evil bad guy criminal villains.
Taser: You're under the restrictions of a bet.
Nighlock: Do you have any non lethal weapon?
Deadpool: Besides my chickens, I have this. [pulls out a cooked chicken shield]
Red Smoke: Where did you even get that?
Deadpool: I used Pinkie's oven by the way.
Pinkie Pie: My cake! What did you do with my cake?!
Deadpool: I used your cake by the way.