Numbuh 4, Numbuh 5 and others in “Unfinished Business”

Looks like Father's coming back!

That's right, so get going, Numbuh 1! We'll hold him off!

Numbuh 1

No way! My place is with you, guys.

We'll take care of it, just go. And make sure you save us some cake when you win.

Numbuh 1

But what about-

[Angrily pushes Numbuh 1] Just go already! Hmph! Does that guy want a personalized invitation or something?!

So, Numbuh 1 went back to the amusement park, right?

Yep, for a one last battle with the Delightful Children. [laughs] Wait 'til you hear about it.