1 Iki Piki: The time machine! If we go back a few minutes, we can stop our future selves from stealing our ship!
2 Robot: It doesn't work that way. Time travel can't change history.
3 Robot: If you haven't already appeared in the past and stopped yourselves, then you can't do it now.
4 Iki Piki: But we have appeared in the past. As the people who just stole our ship!
5 Robot: Then you must go back now to when you appeared in the past, and steal the ship yourselves!
6 Paris: He's right. If you don't go back in time, it could potentially tear apart the very fabric of the entire universe!
7 {beat}
8 Serron: Sod that!
8 [sound]: ZAP!!! {Serron shoots and destroys the time machine}
8 Robot: No! You're destroying the last time machine in exis-
9 {an enormous, ominously silent, explosion}

2021-05-01 Rerun commentary: Of course, despite this having been painstakingly set up across all the themes^[1], and the multiverse-spanning disaster being able to be initiated in any of them, it had to be Serron who kicked it off.

I can't think of a worthier person.

[1] Except Espionage.