As Carlos' only appearance was featured in one scene, not much of his personality is known as he is simply known as an innocent mayor when the pirates are looking for treasure.
When the pirates are asking the mayor for treasure, the Hook Hand Pirate begs Carlos to know where the treasure is to which Carlos' wife tells her son not to tell the pirates. However, he ends up being dunked into the well despite his innocent protests. In the attraction's revamp to add characters from the film series, the Hook Hand Pirate mentions to know where Jack Sparrow would be at to which Carlos' wife tells her son not to tell the pirates about where Jack Sparrow would be at. Like in the original attraction's script, he ends up being dunked into the well despite his innocent protests.
Due to the success of the attraction at Disneyland, the Pirates of the Caribbean attraction was later built in Magic Kingdom, Tokyo Disneyland, and Disneyland Paris still featuring the scene where the pirates are interrogating the mayor of Puerto Dorado.
A deleted scene featured a man being interrogated the same way as Carlos from the original attraction, though Carlos himself did not appear in the film series at all. According to the novelization based on the film's plot, the man was being dunked for sport.
Like in the deleted scene for the first film, a man playing the same role of Carlos appears during the scene where Jack Sparrow and his crew arrive at Tortuga. This scene was recreated from the original attraction where it features a man being interrogated in the same way as Carlos.
- In the "Virtual Safari" DVD game released included on Disc 2 of The Lion King 1½, Pumbaa plays the role of Carlos being interrogated into the well while Pumbaa's "mother" plays the role of his mother if the viewer chooses the scene where Timon, Pumbaa, Ma, and Uncle Max travel to the parody of the Pirates of the Caribbean attraction.