* HeyItsThatGuy: Now, wait a second, isn't that [[Series/PowerRangersNinjaStorm Dustin Brooks]] in the thirdquel?
** And [[{{Everwood}} Ephram Brown]] ([[TheDanza Gregory Smith]]) is Zenon's love interest Greg in the first.
** Commander Plank is [[{{Series/Dinosaurs}} the voice of Earl Sinclair]].
** [[Film/X2XMenUnited Jubilee]] is Gemma.
* TheOtherDarrin: Creator/RavenSymone originally played Zenon's best friend Nebula, then Shadia Simmons played her in ''The Zequel''...then Raven again played her in ''Z3'' (though only for a cameo; Nebula's cousin Cassie [[SuspiciouslySimilarSubstitute filled her role]]).
** Protozoa, played by PhillipRhys in the first movie, gets replaced in ''Z3'' by Nathan Anderson.
** Zenon's parents get replaced in the Zequel and don't even show up in ''Z3''.
* PropRecycling: The station staff wore [=EarthForce=] uniforms from ''Series/BabylonFive''.