As the STRIKE Hunters battle in the eternal knight. Jim and Knight find them selves battling Angor and Gunmar-

https://youtu.be/l64zCyu8Kvs

Jim/Knight: FOR GLORY!

This is the only footage of the fight I could find

https://youtu.be/7wwkZRS007c

While Jim dealing with Gunmar Knight(Prince Form) is taking care of Angor-

Knight rushes toward AR and dodges his green blade and tries to slash his stomach but he dodges and punches knight to the ground on his stomach. AR kicks his knight's sword away and tries to strike but knight makes a quick recovery and-

AR goes into a building and quickly comes back out and tries to slash but, knight does 

Knight: CELESTIAL PUNCH!

Knight fists begin to glow and he rushes toward Angor and punches him into the ground. Knight looks at AR and-

AR: Go ahead, finish me off.

Knight: You know what is sad I heard you were once a great warrior and hero to troll kind. What's the excuse now that you have your soul back.

AR: GASP!

Knight backs away from him-

Knight: Now if you'll excuse me my friends need me.

Knight runs off to help his friends while AR stands up and looks at his blade with a mournful expression.

Meanwhile, as Nomura chops down Gunmar's remaining troops, Claire and Toby report to Blinky that all the survivors are perfectly safe inside the school. They also wonder why the Eternal Night is still responsive since they've assumed that Merlin should've had his magic back at that moment.

However, Merlin cannot fend off Morgana forever, especially with hardly any magic. While AAARRRGGHH!!! is pinned down by the other Gumm-Gumms, Morgana taunts her former master for his impulsiveness and has every intension of ending his cause, along with everybody associated with him. When Merlin asks him to "Lend a hand", AAARRRGGHH!!! breaks free and charges to the Hero's Forge, where the Soothscryer is waiting for him.

In the Darklands, NotEnrique and Chompsky have located the Nursery. Despite some initial troubles with the Cradlestone , they manage to rescue all the babies, and make their escape.

Meanwhile, Jim takes down gunmar However, he gets back up, and Gunmar hurls Jim straight onto the roof of the museum. Jim recovers quickly, but there seems to be no sign of Gunmar, until he bursts through the roof and attacks. He gains the upper hand, and pins Jim down, preparing to turn him with the Decimaar Blade.

Back inside Trollmarket, Morgana tries to decide between one of the many ways to kill Merlin, and settles for trying them all. Just in time, AAARRRGGHH!!! has returned with reinforcements. And those reinforcements are all the spirits of the past Trollhunters: everyone ranging from Kanjigar to Deya. Their spirits possess the bodies of the Gumm-Gumm soldiers, and they join the fight (with Unkar only having five seconds of life before dying for self explanatory reasons). With the Trollhunters handling Morgana as best as they can, Kanjigar urges AAARRRGGHH!!! to return to the surface and help Jim.

https://youtu.be/iB2zHo_7JKE

https://youtu.be/Og4k4fdLy3c

https://youtu.be/OmIoo198uHs

https://youtu.be/MSrl56ZcK6s

???: OHH NO YOU DON'T!

https://youtu.be/o-dUgFg1BiI

Before the blast hits STRIKE Force comes down and knight slashes it down the middle dispersing it-

Brawler: Sorry we're late Trollhunters.

Wolf: I'm angry at you guys. Who said you guys can have all the fun?

Ninja: You fall today witch!

Knight: This is the end of you Morgana!

Deku: You won't hurt anyone anymore!

Morgana: Well if it isn't the little heroes. You actually think you stand a chance against us.

Toby: I think you mean you:

Three figures land beside Morgana-

VD: (Smirking) No she means us!

Deku: The MFH!

Carnage: THIS IS GOING TO BE FUN HAHAHAHAHAHAHAHAHAHAHAHAHAHA!

Stain: You all will fall!

???: WAIT!

AR leaps onto the bridge-

Morgana: Ahh My Champion!

VD: Cool more help.

Angor looks at both sides and starts walking the STRIKE Hunter as they get ready to fight and when he made it there he took something out of his body. The piece of the SP!

AR: This is what your looking for right Heroes.

Deku looks surprised and grabs the piece and puts it into his gauntlet. Knight walks up to AR and -

Knight: Welcome Back.

AR just smiles while Morgana and VD become Furious-

VD: NO THE PIECE!

(Morgana = MO)

MO: YOU BETRAY ME!

AR turns around and takes out his blade-

AR: NO I betrayed my kind.

MO: YOU ALL WILL FALL!

All the heroes and hunters come together in a line-

(LIKE THIS)

Ninja/Claire: What do we do Deku/Jim.

Deku and Jim at each other and nod-

Deku/Jim: WE FIGHT!

Both sides run at each other and-

Everyone: AHHHHHHHHHHHHHHHHH!

Deku and VD jump and they both pull back their legs and-

as they clash the FINAL BATTLE BEGINS!

Hope you enjoyed the chapter