(The heroes are seen proceeding even further at Hawkmoth's mansion.)

Vincent: Hey, Banjou?

Vulcan: Yes?

Vincent: What can you tell us about the next villains we're going to face?

Momo: I can explain more about the next villains, Mr. Wilson.

(Momo, Izuku and Ochako start explaining about Moonfish, Magne and Mustard. After the explanation, Vincent gets serious and places the Build Driverin his waist.)

Vincent: (pulls out two fullbottles) Alright. Moonfish, Magne, Mustard, Selkie, Sirius and Edgeshot are coming here anytime. They may be a little tougher, but I'm positive that we can beat them.

Heroes: YEAH!

Vincent: Now, shall we begin the experiment?

(Vincent shakes them two fullbottles and places them in his driver)

B. Driver: Panda! Rocket! Best Match!

(Hajime pulls out three core medals, Izuku attaches the Shinning Hopper progrisekey into the assault grip, Ochako pulls out her Rampage Turbo Progrisekey and Momo pulls out the Dauntless Scarab and Valorous Stag Progrise Keys.)

Progrisekeys: Hyper Jump! Turbo Dash! Zetsumetsu Evolution! Brave Horn!

ShotRiser: Allrise!

(Vincent spins his driver's lever and the other riders prepare to transform.)

B. Driver: Are you ready?

Riders: Henshin!

B. Driver: Buttobi monotone! RocketPanda! Yeah!

Zero-One Driver: Progrise! Warning, warning. This is not a test! HybridRise! Shining Assault Hopper! No chance of surviving this shot.

ShotRiser: Full Shotrise! Gathering Finale! Turbo Gatling! Stag, Buffalo, Hercules, Giraffe, Horseshoe Crab, Spider, Jackal, Kangaroo, Lion, Hedgehog, Panda, Penguin, Whale, Cheetah!

Thousandriver: Perfectrise! When the three swords cross, the blue soldier Thouser Blade is born! Presented by ZAIA.

OOO Driver: Taka! Kujaku! Condor! Ta~ja~dol!

(Then they become Kamen Riders again. And as they prepare to fight, Moonfish, Magne, Mustard, Selkie, Sirius and Edgeshot come in.)

Build: So... despite your claims, you heroes turned to Hawkmoth just to get back at Izuku.

Sirius: If he just stayed at U.A. this wouldn't happen.

Zero-One: Many former heroes said that before they died. And now you're next.

Thouser: Let's do it.

Valkyrie: Violations of LOV spotted. Destroying targets!

OOO: I'll show you my power!

Zero-One: There's only one who can stop you, and that's me!

Kiva: Shall we begin this battle already?

Heroes: Right!

(Build and Kiva rush at Moonfish while OOO and Vulcan deal with Magne, Kivala and Thouser take on Mustard, leaving Valkyrie and the other heroes to handle the former heroes. Sounds of weapons clashing, shooting and explosions are heard. Build and Kiva set Moonfish up for a double combo which deals a significant amount of damage to him.)

Moonfish: I'll show you real damage!

(Moonfish tries to attack, but Kiva kicks him down.)

Build: Thanks, Kiva.

Kiva: Anytime, Build.

(The two nod at each other and rush at Moonfish once again, pushing him back. Meanwhile Valkyrie, Ingenium and Eraserhead have the former heroes on ropes as Sirius, Selkie and Edgeshot can't lay a single blow.)

Sirius: Damn you! Let go of us!

Eraserhead: No can do!

Valkyrie: Evil must be eliminated.

Ingenium: And you three are evil!

(Then Valkyrie prepares her finisher.)

ShotRiser: Turbo Hurricane Blast!

(Valkyrie destroys the three former heroes at once. OOO, Vulcan, Kivala and Thouser rush at the outraged Mustard and Magne. Back to Build and Kiva, they have dealt increased damage on Moonfish.)

Moonfish: This... can't... be...

Build: The laws of victory have been set!

(Build spins his driver's lever while Kiva prepares to finish Moonfish as well.)

B. Driver: Ready, go! Vortex Finish! Yeah!

Tatsulot: Dogga Fever!

(They finish Moonfish, and soon Magne and Mustard slide close to Build and Kiva.)

Kiva: It looks like you're at the verge of death.

Mustard: You cheated using overpowered attacks.

P. Thief: No, it's just that you never bother to fight.

(Then the four riders prepare to finish the two villains.)

Tatsulot: Syren Fever!

ShotRiser: Power! Speed Rampage! Rampage Speed Blast!

Thousandriver: Thousand Destruction!

OOO: Scanning Charge!

(The four riders kick through the two villains, killing them.)

Vincent: Now we just need to deal with Tomura, Dabi, Toga, Gang Orc, Death Arms, Gunhead, Uwabami, Best Jeanist and Manual.

She-Hulk: We will succeed in beating them, darling. And we will see a bright future together!

(Vincent nods and gives She-Hulk a kiss in the lips, and then the heroes proceed as the screen fades out.)