Other mistake: In the scene where Tzekel-Kan reveals the big tiger thing, he is on his knees facing it. He says "do as I command" and raises his right arm and the tiger raises his left arm. The tiger and Tzekel-Kan should both raise the same hand because the tiger is built to mimic Tzekel-Kan's exact moves.
The Road to El Dorado (2000)
1 other mistake - chronological order
Directed by: Bibo Bergeron, Will Finn, Don Paul, Jeffrey Katzenberg
Starring: Kenneth Branagh, Kevin Kline, Armand Assante, Rosie Perez
Continuity mistake: After the ball game, there is a cut over Miguel's eyebrow. Right after this scene, the cut has disappeared.
More quotes from The Road to El Dorado
Trivia: In the original script Miguel & Tulio were much more close, calling each other names like "darling", and becoming much more frustrated with each other when Chel came between them. The producers and other executives decided to remove these pet names and other references from the movie, but on some subtitles the pet names are still visible.
Answer: The high priest's name is Tzekel-Kan.