During some of the wrestling scenes they used blow-up dolls to replace some of the audience. Supposedly, they cost much less than extras and they looked real.

The song that Jack Black sings at the party was improvised.

Ramses is portrayed by Cesar Gonzalez, a real-life luchador best known as Silver King, a second-generation luchador who is the son of lucha libre legend Dr. Wagner. He is also the brother of fellow luchador Dr. Wagner Jr. and the uncle of the recently debuted Dr. Wagner III.

During filming Jack Black recorded a series of "confessionals" which were uploaded onto the Internet as video podcasts available from iTunes. They became one of the most popular podcasts in the world.

The film was partly inspired by Fray Tormenta ("Friar Storm"), aka Rev. Sergio Gutiérrez Benítez--a Mexican priest who became a wrestler to raise money for his parish.

While filming a wrestling scene, Jack Black jumped from the ring and struck his head on a chair. This caused a black eye and a gash above his right eye which needed stitches.

Troy Gentile (young Nacho) also played the younger version of Jack Black's character the same year in Tenacious D in The Pick of Destiny (2006).

The "Nachomobile" is a customized version of a pedal tricycle commercialized in Mexico, which got an after-market upgrade by adding a scooter engine and wider tires.

"Chancho" is Argentine slang for pig, Esqueleto translates as skeleton.

Jack Black's character, Nacho, was based in part on Antonio Banderas.

Was sent to theaters under the codename "Toast".

Throughout the movie, the luchador Ramses wears a golden mask. This is a reference to Father Victorio Gaetano's luchador costume from L'homme au masque d'or (1991), the movie Nacho Libre (2006) is based on.

Like in wrestling, in the movie Ramses never takes off his mask.

During the filming Nacho Libre {Jack Black } Challenged a true warrior name Francisco Daniel Dominguez from San Antonio Texas , as part of a promotional event . During the challenge Francisco did a triple Tornado kick . Which landed on Mr Black face causing a 3 month delay in filming .

One of the moves that Satan's Cavemen performs is the "619" by Rey Mysterio.

Other than the fight with Ramses at the end of the film, Ignacio never wins any other time when he is in the ring.

Silencio finishes Nacho off with a Tombstone Piledriver