Given your request encompasses a large and diverse cast of characters from various video games and a specific episode premise with Xavier Riddle and the Secret Museum, a PBS Kids show, this is a creative and complex scenario. I'll draft a simplified and creative dialogue-inspired script to set this imaginative scene. Note that this is purely fictional and speculative, given the unique crossover.

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Title: Episode 38: "The Lesson of Teamwork"*

(Scene opens in the Secret Museum, with Xavier, Yadina, and Brad looking puzzled at the mysterious artifact that just appeared, glowing and pulsing.)*

Xavier: Whoa, what's this new artifact?

Brad: It looks like it's from multiple universes... all mixed together!

(The artifact activates, and suddenly Kirby, Tiff, Tuff, and the Dream Friends along with the Dream Squad appear in a flash of light. The room is now filled with characters from the Kirby universe and the Dream Squad.)*

Yadina: Oh my! Who are you all?

Kirby: Hi! I'm Kirby! And these are my friends from Dream Land and beyond!

Ms. Chalice: And we're part of the Dream Squad! Looks like we're all here for a reason.

(Everyone looks around, confused but intrigued by each other's presence.)*

Tiff: We should figure out why the artifact brought us all together.

Susie: Perhaps it has to do with a lesson we all need to learn or share.

Cuphead: Teamwork, maybe? We're all from different places but brought together here.

(Xavier looks at the artifact and notices inscriptions about historical figures who exemplified teamwork.)*

Xavier: You're right, Cuphead! It says here about historical figures who changed the world through teamwork. Maybe that's our adventure today!

(The scene transitions to them all being transported back in time to witness various moments of teamwork in history. They see the construction of the pyramids, scientists working together on a breakthrough, and even artists collaborating on masterpieces.)*

Marx: Understanding teamwork across time and space, huh? Fascinating!

Billie the Goat: Just like us right now, different but working together.

Brad: Exactly! Teamwork isn't just about being the same; it's about bringing different strengths together.

(They return to the present, inspired and enlightened.)*

Mugman: I guess every team needs a variety of skills and perspectives to succeed.

Elline: True! Just like how each stroke of paint creates a bigger picture.

Adeleine: And how every star in the sky brightens the night.

Taranza: We all played a part, no matter how small.

(Xavier, Yadina, and Brad smile, realizing the impactful lesson they've learned.)*

Yadina: So, even though we're all different, we can make amazing things happen by working together!

Xavier: That's the power of teamwork. This was one awesome adventure!

Kirby: Poyo! (Agreement)

(Everyone laughs and agrees, celebrating their newfound understanding and friendship.)*

Brad: So, what's next for our team?

Xavier: Only time will tell, but whatever it is, we'll face it together!

(The artifact glows softly, as if in agreement, and the characters pose together as the scene fades to the ending credits.)*

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This scene aims to capture the essence and educational theme of Xavier Riddle and the Secret Museum, focusing on the value of teamwork, while incorporating a vast array of characters from the Kirby universe and beyond in a narrative that honors both worlds.