Scooby-Doo! and the Monster of Mexico

Charlene orchestrated her own abduction as part of a scheme with Mr. Smiley to scare the Otero family into selling their hotel. As the tour guide disguised as El Chupacabra, she played both roles to manipulate the family and take advantage of their financial desperation.

Earlier, Dolores warns that Charlene has been taken by El Chupacabra, but the creature's timing conveniently aligns with the villains' plan.

El Chupacabra was actually two people working together: Mr. Smiley operated the creature from a shed using a skeleton costume and ghostly illusions, while Charlene (the museum tour guide) wore the monster suit during attacks. Both were plotting to force the Oteros to sell their hotel.

The grammatical error in the threat note and the suspicious timing of the monster attacks hinted that locals were behind the creature.

Mr. Smiley owned a theme park and created the El Chupacabra scare to drive tourists away from Veracruz's local businesses, including the Otero hotel. His goal was to force the family to sell their property cheaply so he could develop the land for his own profit.

Diego Fuente, the business partner, wanted to buy the hotel early on, but his connection to Smiley's scheme was revealed later.

The threatening message painted on the Mystery Machine contained a grammatical mistake in Spanish that a native speaker would never make. This clue indicated that the person behind the threats was pretending to be a local but wasn't actually familiar with the language.

Velma and Daphne noticed this discrepancy while reviewing clues at the Otero home, helping them realize someone was impersonating a local.

Diego Fuente initially seemed like a villain trying to buy the struggling hotel, but he was actually trying to warn the Oteros about Smiley and Charlene's plot. He admitted at the end that he knew about the scheme and was attempting to alert Mystery Inc. and the family.

Fuente's persistence in visiting the hotel and his attempts to communicate warnings were misunderstood as business pressure.

Fred realized that the good luck charm Charlene gave Luis was actually a tracking device. He activated it, and the signal led Scooby and Chiquita the dog directly to the shed where Mr. Smiley was operating the ghostly illusion equipment.

Charlene's gift seemed suspicious from the start, and Fred's careful examination of all evidence paid off.

The ghostly visitation was actually part of the villains' manipulation. They used the spirit to pressure the Oteros into selling, but the real father's memory was being exploited. When Luis pleaded for help, Charlene's offering remained untouched while others disappeared, revealing the deception.

The ghost appeared at the cemetery during Day of the Dead, coinciding with the peak of the scheme.

The museum tour guide was Charlene in disguise. She led the gang into a performance about Mexican customs, volunteerized Daphne for participation, and then used the chaos to kidnap her. The tour guide was also the one inside the El Chupacabra suit during attacks.

Her overly energetic behavior and quick disappearance after Daphne was taken raised suspicion.

While not explicitly shown, the brake draining occurred when Shaggy and Scooby were left alone with the Mystery Machine. This was part of the villains' attempt to stop the investigation, though the specific person responsible was never directly identified.

The threat message on the van warned them to stop digging, showing the villains were actively trying to sabotage them.

El Curandero, the medicine man in the woods, warned that danger was imminent and urged them to study history to understand the monster. This pointed to the connection between the ancient past and the present-day scam, as the villains exploited local legends and sacred sites.

The gang's visit to the museum and the Aztec pyramid secret passage directly related to this warning.