Ken uses Japanese terms in the dub, such as "Adult" for "Champion" and "evolved" for "Digivolved".
Ken places the Dark Spiral on Agumon's lower arm. But after he Digivolves to MetalGreymon, the Spiral is on the upper part of his arm.
Nefertimon uses her Cat's Eye Beam, but calls out "Rosetta Stone".
Davis refers to the Digimon Emperor as "the DIGITAL Emperor".
When Agumon Dark Digivolves into ShadowMetalGreymon, the "Digimon Monster" analysis stated that he is a Champion, but both MetalGreymon species are Ultimate.
Cody: You should be ashamed of yourself, Ken. You're the kind of bully who gives bullies... a bad name!
Davis: Tai, Agumon's close. I'm following his tracks.
Tai: Those are TRAIN tracks, Davis!
Tai: (taking a math test) Integrated... quadratic? It's like this stuff makes no sense!!
Tai: (About MetalGreymon) Let me just try to reach him! Ah!
Davis: The only thing you'll reach is the bottom of his footprint, Tai!
Tai: Agumon! You've got to fight the Digimon Emperor's control! It's me, Tai! Don't you recognize me?
Digimon Emperor: Ooh, such a tense moment. I've got chills. Allow me to answer. MetalGreymon, attack!
Digimon Emperor: How did Agumon get away?
Wormmon: An escape clause in his contract?
Kari: It's Ken!
Digimon Emperor: My name is the DIGIMON EMPEROR!
Davis: So now you don't want to be called Ken, huh? So how's Kenny or Kenneth?
Woodmon: I am Woodmon! I cannot be defeated!
Flamedramon: Flame Shield! (Attacks and knocks down Woodmon)
Woodmon: Hey! i'm being defeated!
Flamedramon: Fire Rocket!(The control spire breaks and lands on Woodmon, who starts to sink into the ground)
Woodmon(Dark Ring breaks): Yikes! Ah! Whas happened to me? And who are you?
Tai: Woodmon! Do you know where the Digimon Emperor can be found?
Woodmon: Well, I'm not really sure, but I think he went that way.
Tai: Thanks a bunch! Go, go!
Woodmon(Sinks further): Can I get some help here? Seriously! Big Spire! Really heavy!
Davis: Sorry I'm late. I was supposed to get a haircut but when I looked in the mirror, I realized my hair is perfect.
TK: The only thing is he was staring in the mirror for over an hour.
The theme song now shows Ken's Black Digivice in Wormmon's background.
Wormmon frees Agumon from the Dark Ring, but Agumon gets taken over again by the Digimon Emperor with the debut of the Dark Spiral.
ShadowMetalGreymon (called MetalGreymon in the analysis) is also called BlackMetalGreymon.
The Blue Colored MetalGreymon is a Virus type unlike the Normal MetalGreymon which is a Vaccine type