(After defeating the H.I.V.E. Five and the lord of Darkness HIM, Y/N is seen walking around with the Powerpuff Girls and Stargirl.)

Y/N: Well... I gotta go, girls. I need to make some last adjustments in Optimus Cave.

Buttercup: Optimus Cave?

Y/N: My new hideout. Courtesy of the Justice League.

(Then Batgirl and Wonder Woman come in.)

Batgirl: You got a hideout of your own?

Y/N: Like I said, courtesy of the Justice League.

Wonder Woman: And the last thing someone would want is to have his hideout messier than Brainiac's space collection.

Blossom: Brainiac?

Stargirl: One of the most powerful enemies the Justice League ever faced.

Wonder Woman: We had to do our best to defeat him, and we eventually did, thanks to Superman.

Y/N: I gotta go.

(Then Y/N transforms into Optimus Prime and flies to his hideout. Some minutes later, Y/N is doing some last adjustments and manages to complete the Optimus Cave.)

Y/N: And... done! It's much better than before.

(Then he goes to sleep until some familiar figures appear out of nowhere. They are various versions of Optimus Prime, including Optimus Primal.)

Y/N: Am I dreaming?

G1 Optimus: No, Y/N. We are real.

Y/N: Am I really seeing various versions of the original Optimus Prime?

IDW Optimus: You bet you are.

Alternity Optimus: We're here to tell you that you have a great power.

Y/N: A great power?

BB Optimus Prime: Yes, you have.

Animated Optimus: You have the ability to change into different versions of Optimus Prime.

DOTM Optimus: Which means each one of us.

TLK Optimus: Try it.

(Then Y/N concentrates and becomes TFP Optimus Prime.)

Y/N: (as TFP Optimus) I transformed.

TFP Optimus: See? You don't need a power suit to become one of us.

Optimus Primal: Well... that's just Prime.

RID Optimus: Use your powers to keep fighting to save the world.

All Optimus: We're counting on you.

(Then Y/N reverts back to his human form.)

Y/N: Thank you, Orion Pax.

(Then he goes to sleep.)

(Next day, Y/N wakes up and sees the message on the computer. he clicks the button and sees a video of Samurai Jack as he talks.)

Jack: If you're seeing this message Y/N, this means my archenemy Aku is planning to unleash an unspeakable evil. He has the help of Mandrak, Vilgax and Mojo Jojo. We need your help, more than ever.

(Message ends)

Y/N: Jack, you can count on me!

(Y/N transforms into Optimus Primal and sets out of the Optimus Cave and goes to help the Cartoon Network Heroes to fight the Quadruple Villainous Alliance.)

(To be continued)