Miraculous and The Flash crossover: Collision of Worlds. (Book 4)

Now, Argos bounds over rooftops, scouring the city skyline.

Argos: Where is he? How on earth did Ladybug and Flash manage to find this guy the first time around?

Argos jumps to another rooftop, stopping for a moment before thinking for a moment.

Argos: I don't see why the heroes get to decide who is granted a Miraculous. The sooner I find this so-called "Guardian," the better.

Before Argos can say another word, a streak of red lightning rushes by.

(ZOOOOM!)

Argos: What the-?!

Argos follows the rush of electricity close behind. Doing his best to keep it in his sights.

Argos (TB): “That's weird. Since when is Flash's lightning red?”

Argos comes to a stop near the Grand Palais building. He sees Reverse Flash standing with Falena Falco on the ground level.

Argos (TB): “That's definitely not Flash. But who's that he's with?”

Argos watches the two conversate before they head inside.

Argos: Seems like I'll need some backup. Hold my feathers.

Felix de-transforms and feels around his suit before finding a hair comb.

Felix: Ah, this'll work. Spread my feathers!

He transforms back into Argos, reaches for his hand fan, and plucks out a feather. And infuses it with blue energy. A dark blue mass takes shape, as Argos moves his hands as if shaping and morphing the Senti-being into reality, telepathically.

Once Argos finishes, the Senti-being is revealed to be an exact copy of the Flash. It opens its eyes to gaze at his creator.

Argos: You're perfect, Senti-Flash. You will assist me in spying on Reverse Flash and his Moth-Miraculous partner.

Senti-Flash: At your disposal, Argos.

Back at Francois Dupont, Barry exits his final class for the day. Alya approaches him.

Alya: Hey, Barry.

Barry: Oh, hey there, Alya.

Alya: We gotta talk. I trust you're aware that Marinette's dad had a heart attack the day before his release?

Barry: Unfortunately.

Alya looks around and leads Barry underneath the stairway.

Alya: Listen, while you've been working to find Mrs. Dupain-Cheng’s real killer, I've been doing some research, myself.

Barry: What've you found?

Alya: I did some research and found a recurring pattern between Marinette and the attacks you've been investigating.
And I realized that each one of the attacks coincided with the theft of a piece of technology from a large tech firm.

Alya takes out her phone and shows Barry locations of major tech companies all over France.

Alya: Check it out, the day Marinette's mom was found dead. A tech firm outside Paris was broken into, and their high-tech holo-computers were all missing. A couple weeks after Marinette broke her arm, Tsurugi Industries was robbed.

Barry scratches his chin, taking in the new information.

Barry: You think this has to do with Ms. Dupain-Cheng’s killer?

Alya: Well, yeah. And look here. The day before Mr. Dupain was set to be freed, Tsurugi Industries was robbed again by an unknown assailant, who could move at super-speed.

Barry: Officer Raincomprix told me he suspected the Flash broke in and attacked Tsurugi Industries.

Alya: I'm guessing you didn't, though?

Barry shakes his head.

Barry: No, the Flash didn't have anything to do with it. I know for a fact he didn't.

Meanwhile, Argos gets to a vantage point above the glass dome of the building.
Watching Falena Falco and Reverse Flash approaching an old man in a trench coat and hat.

Falena Falco: At long last. We finally meet, Great Guardian.

The old man, in reality, Master Fu, avoids their gaze.

Master Fu: I'm afraid you have me mistaken for-

But before he could find Reverse Flash rushes forward and attacks.

(ZOOOOM!)

Unfortunately, the yellow speedster severely underestimated how skilled the smaller man truly was. As Master Fu strikes Reverse Flash in the chest and hits specific nerve ends on his torso.

Reverse Flash: AAAAGHH!

He lands on the ground in front of Falco. Feeling sore.

Reverse Flash: Ugh…

Falco turns to Master Fu in shock.

Falena Falco: What did you do to him?

Master Fu: Palm-heel strike, with acupressure submission.

Falena Falco snarls indignantly.

Falena Falco: Grr! Right, I forgot. Master Fu was a chiropractor before Hawk Moth forced him into hiding.

Falco grabs her cane from behind her back.

Falena Falco: Looks like I have to do everything myself.

She goes to strike the old man but is intercepted by the Senti-Flash.

(SWOOSH!)

He sends an uppercut flying towards Falco's bottom jaw.

(KRAKK!)

Falena Falco: UHHH!

She hits the ground hard and rubs her jaw as she sees Senti-Flash standing between them and Master Fu.

Falena Falco: You can't be serious!

Reverse Flash: How did he find us?!

Argos: Because of me!

Argos leaps down and stands next to his creation.

Falena Falco scowls at the newcomers.

Reverse Flash: Figures. It's you! Teaming up with Flash now, are you?

Argos: So what if I am? I got what I needed from you two.

Senti-Flash: And we both know that you're not getting your hands on that Miracle Box.

Argos: So if you want to get it, you'll have to go through us.

Falena Falco: Who's side are you on, Felix?!

Argos grins, confidently.

Argos: Mine.

Master Fu: Then you won't be alone.

He holds up his bracelet.

Master Fu: Wayzz, Shell on!

In a wave of green light, Master Fu now wears green armor: a dark green chest plate with the front being light green and light green pauldrons and tassets with dark green edges; dark brown loose pants, elbow pads, and a collar; and dark green armor boots with light green toe-caps and dark brown soles. His mask is dark green on the upper half and light green on the lower half. On top of his head is a conical hat, which doubles as a shield.

The trio prepare for a fight, as Falco and Reverse Flash square up.