This is how Optimus, Twilight, Malfunction, Sunset, Bumblebee, and Rarity vs Lockdown and Lockdown's death goes in My Little Pony Transformers: Age of Extinction.
[We see Optimus, Twilight, Malfunction, and Sunset going to confront Lockdown]
Lockdown: Prime, Twilight!
[Lockdown jumps down from his ship firing rockets]
Major Malfunction: Brother, our father told us the Creators are monsters, why are you fighting for them? You don't fight for the Cosmic Balance, you fight for money.
Lockdown: Because my mentor works for them, brother. He always has.
Major Malfunction: Impossible, Megatron spoke highly of his loyalty to him.
Lockdown: Megatron should've been careful of those around him.
[They begin their fight]
[Sunset loads her gun and aims at Lockdown]
[Only to drop it when being shot at by Tirek]
Tirek: You see, it takes patience to make an Equestrian. The patience to watch and wait, to protect all of us, for gods and country, without any recognition at all!
[As he holds her at gunpoint, Optimus, Twilight, and Malfunction see this]
Optimus Prime: Sunset!
Twilight Sparkle: Hold on!
Major Malfunction: I'll hold off my brother! Save her!
Tirek: There are no good aliens! Or bad aliens, Shimmer. Only us and them. And you chose them.
[Optimus and Twilight slide in and fire at Tirek, killing him]
Sunset Shimmer: Any time.
[However, Lockdown pins his brother under his own sword, and takes Optimus and Twilight by surprise]
[Lockdown then pins them against a cooling chamber wall with their swords]
Lockdown: You two saved the girl instead of saving yourselves. You bring shame upon us all.
[Sunset fires her gun, taking Lockdown by space]
[Malfunction frees himself and fires missiles at his brother]
[Bumblebee and Rarity arrive]
Sunset Shimmer: She never listens. Never.
[Bumblebee transforms and helicopter kicks Lockdown]
Optimus Prime: We gave you an order.
Twilight Sparkle: And we meant it.
[Malfunction punches Lockdown]
[Malfunction transforms into a towtruck and Rarity hooks it up to a pole]
Major Malfunction: Come on, come on, come on.
[The cable trips Lockdown just as he is about to kill Bumblebee]
Major Malfunction: Yeah! Killer robot my tailpipe!
Optimus Prime: Everyone, get out of here! This is my and Twilight's fight!
Twilight Sparkle: Sunset please!
[Lockdown grabs Bumblebee's foot]
Lockdown: It's my fight! [slams him on the ground] And you're all going to die!
[Sunset continues firing]
[Optimus and Twilight try to free themselves]
[Rarity hooks Malfunction up to Optimus and Twilight's swords]
Rarity: [to Malfunction] Drive!
[Malfunction does so]
[Lockdown takes Sunset's gun]
Lockdown: You see my face, your life is done.
[He prepares to kill her]
Major Malfunction: Come on, come on, come on!
[He pulls the swords out]
[Optimus and Twilight get up, grab their swords, and move in for the kill with Malfunction]
Major Malfunction: [unsheathes his claws and rips out his throat and some cables]
[Optimus and Twilight drive their swords through Lockdown's chest and slice upwards, ending his life]
Major Malfunction: Never had a chance, brother.
Optimus Prime: Honor to the end.
Twilight Sparkle: Honor to the end of time.
[Just then, the FPI robots find them and fire upon them]
Nighlock: [in War Machine's voice] Oh, come on!
Optimus Prime: [to Twilight, Rarity, Sunset, and Nighlock] Hurry! Quickly! I'm setting off Lockdown's grenade! Hold tight!
[He flies off with them, as the grenade kills the FPI robots]
[We see Galvatron]
Galvatron: We shall meet again, Prime and Twilight, for I am reborn.
[He walks off, taking over the Knight Ship]