As Juni reaches for a neckless he says "one neckless to rule them all."
The case holding Gregorio's mustache emits the same golden glow as Marsellus Wallace's briefcase.
Grandma says, upon entering the submarine, "we're going to need a bigger boat."
Alexa Vega & Daryl Sabara were referred to as the original Spy Kids from the first three movies.
Film Brain talks about the past two movies
DVD seen in video store
Robert Rodriguez mentions this movie during interview
clearly visible poster in background
title seen at video store
detailing the rest of the series
reviewed + footage used
numerous brief scenes from "Spy Kids 2" are shown throughout this movie.
Nikki's lunch box was a prop used in Spy Kids 2, which was directed by Robert Rodriguez, a close friend of Tarantino's.