Character mistake: In the intro, the announcers mention that the 3 evil teams ("rough teams") kidnapped the owner (Wally George himself, in a NES game!). Then they say, "The 3 good teams can only rescue him." It obviously should say that "Only the 3 good teams can rescue him."
Character mistake: Some NPCs can replenish agent Roy Heart (the protagonist)'s health. However, the speech balloon is pointed at them, so they are the ones saying the line in rather stilted English: "Blood stopped, I'm stronger now!"