This is how Ryan vs Grievous goes in My Little Pony Transformers: Revenge of the Sith.
[Ryan arrives at Equessokyo]
Ryan F-Freeman: Hello. I think I need a ride.
Tuma: What brings you here?
Ryan F-Freeman: I was wondering if I can get to ride on a beast.
Tuma: Of course.
Ryan F-Freeman: And some information.
Tuma: He's here. We're being held hostage. They're watching us.
Ryan F-Freeman: Who is with him?
Tuma: Lots and lots of Daleks, Vehicons, and Battle Droids.
Ryan F-Freeman: Where can I find him?
Tuma: He's on the tenth level.
Ryan F-Freeman: Thank you.
[We then see Ryan watching his ship go into space]
General Grievous: It won't be long before the armes of the Keyblade Autobots track us here. I am sending you to the Cyberfar system in the Outer Rim.
[Ryan rides on Grimlock from AOE. Back to the villains]
General Grievous: It is a vocanic planet with Transformium. You will be safe there.
Kaos: Safe? Plah! Princess Luna manage to escape your clutches, General. Without Starkiller helping us, I have some concerns about your stupid ways to keep us safe.
General Grievous: Is that it, Kaos. You have just found yourself in my grief.
Dan Phantom: [chuckles at what he said]
General Grievous: What are you laughing about?
Dan Phantom: You said grief. And your name is General Grievous.
General Grievous: [sighs at this, unammused]
[Ryan is extremely annoyed]
General Grievous: Your ship is waiting.
[Just as Dan is about to leave]
General Grievous: Not you, Dan. Nightmare Moon personally requested you join her on Equestria.
Dan Phantom: Tell her I'm on my way, then.
[Ryan thinks for a moment. He takes off his hat then jumps down to the floor]
Ryan F-Freeman: Hello. You think I like Minions?
[Grievous turns to see Ryan]
General Grievous: General F-Freeman. You are a bold one. [chuckles, to the Magnaguards] Kill him.
[The Magnaguards activate their electro staffs and approach him]
[Ryan gets out his Keyblade]
[The Magnaguards approach him]
[Ryan looks up and uses the Force to pulls a large metal vent on top of them]
[One Magnaguard survives, but Ryan destroys it]
[The Battle Droids, Vehicons, and Daleks prepare to fire at him]
General Grievous: Back away. I will deal with this Jedi slime myself.
Ryan F-Freeman: Your move.
General Grievous: You fool. I've been trained in your Jedi arts by Lord Starkiller.
[General Grievous pushes off his cape and then activates all his arms and then pulls out his all four lightsabers]
General Grievous: Attack, F-Freeman.
[Ryan gets ready]
General Grievous: [twirls his lightsabers fastly and approaches him]
[They clash against each other]
[Ryan slides his Keyblade upwards and cuts off Grievous' bottom right arm]
[Grievous looks from his severed arm and back at Ryan]
[Ryan and Grievous continue battling until Ryan cuts off his bottom left arm]
Ryan F-Freeman: Missing something?
[Grievous growls in rage]
Ryan F-Freeman: Is someone mad?
[Suddenly, the Equestrian Trooper ships fire upon the droids, Vehicons, Cybermen, Daleks, and Heartless]
[Equestrian Troopers hop out of the ships]
[Grievous looks at Ryan]
General Grievous: Army or not, you must realize you are doomed.
Ryan F-Freeman: I think not. FORE!!!!
[He hops onto his bike and rides off]
Ryan F-Freeman: [whistles]
[Grimlock AOE runs up to him and Ryan gets on and chases after Grievous]
[However, as Grimlock jumps, Ryan drops his Keyblade]
[Commander Rictor is firing his blaster when he sees the Keyblade land next to him]
Commander Rictor: [picks it up and looks up]
[Ryan continues pursuing Grievous]
[Grievous sees him and grabs an electro staff]
[Ryan rides up and grab the electro staff from him]
[He then shocks Grievous causing him to fall off his bike and pull Ryan with him as AOE Grimlock is left behind]
[The chase continues]
[They then crash at a platform]
[Both get back up]