Continuity mistake: When Ace is solving the case in front of the guy that hired him, the guy is playing chess with no-one at all. Then Ace takes big steps towards him, moves a piece, then when the camera cuts back to the guy playing chess, all the chess pieces are gone, no sign of them whatsoever. Then they reappear later.
Ace: Tell them what I'm saying. [To Wachootoo tribe] I come in peace.
Ouda: White devil say, "I will harm you."
Ace: I couldn't help but notice that Eqinsu Ocha part. Did you just refer to me as White Devil?
Ouda: This how they know you.
Ace: Leave that part out from now on. [To tribe] I represent the princess.
Ouda: I am a princess.
Ace: War is hell. The last thing we want is a fight.
Ouda: I want to fight. So go to Hell.
Question: Who's singing "Secret Agent Man" in this film? It's during the 'master of disguises' montage.