"Retro" is the fiftieth episode of Lilo & Stitch: The Series. It aired on May 20, 2005.


Nani's middle school friends, Ellen and Lona, return to Kauai for a visit and, thinking that Nani is vice president of the business she works for (which is clearly not true), invite her and her ʻohana on a yacht cruise. Meanwhile, Stitch encounters an experiment that reverts individuals to a primitive state. Lilo, Jumba, Pleakley, Ellen and Lona are transformed into cave people, which causes trouble on the yacht. Now, Stitch must find and capture Retro before it's too late.

Experiment mentioned


  • Moral: Be yourself.
  • Music from The Land Before Time sequels can be heard several times during this episode.
  • Nani's junior high friends, Ellen and Lona, are revealed to live in New York and Los Angeles respectively.
  • Stitch's chicken disguise resembles that of Feathers McGraw from Wallace and Gromit in The Wrong Trousers.
  • The saber-toothed squirrel is a reference to Scrat, a character from the Ice Age movies.
  • Lilo as a cave girl looks similar to Fang from Dave the Barbarian.
  • This is the only episode where Nani is at fault, as opposed to Lilo and/or Stitch. However, technically speaking, she did not lie about being rich, though Ellen and Lona jumped to false conclusions before Nani could explain.
  • The wildlife preserve is a parody of the one from the 1993 sci-fi film, Jurassic Park.
    • Evidently, some scenes in Jurassic Park were filmed in Kauai (for example, the scene with the Gallimimus stampede). 
  • At the end of this episode, Lilo even mentions that the wildlife park reminds her of a movie she once saw, which is referenced by a living T-Rex that Retro reincarnated by unknown means, a nod to said film.
  • Gantu, Reuben and Hämsterviel do not appear in this episode.
  • In "Woops", Retro erroneously appeared with Gantu's other captive experiments, but he was captured by Lilo and Stitch.