The last match for the first round of the Friendship Cup is between Kurosaki and Dennis, both Lancers. Yuya questions why Lancers are facing each other in the first round, while the Council and Reiji each state that they have their interests in the duel. In his first turn, Dennis quickly summons Entermage Trapeze Magician and three Entermage Shadow Makers. Kurosaki retaliates by targeting Trapeze Magician with his trap, Raidraptors Target Flag, and then destroys it with Revolution Falcon, forcing Dennis to reveal his hand. Dennis reveals his Polymerization card in his hand, confirming Kurosaki's suspicions — Dennis is an agent of Academia.
His true nature revealed, Dennis's demeanor changes, as do his dueling tactics. He activates Antique Gear Chaos Fusion to Fusion Summon the monstrous Antique Gear Chaos Giant, shocking the Lancers watching and infuriating Kurosaki, who recognizes the monster as the main attack force of Academia when they invaded the Xyz Dimension. The episode ends with Dennis saying that a hunting game has started.
This episode provides examples of:
- Beneath the Mask: This episode shows what Dennis is really like.
- Chick Magnet: Dennis has a lot of fangirls as this episode revealed.
- FaceHeel Turn: Played With. Dennis finally reveals his allegiance to Academia, but he was always The Mole.
- Freeze-Frame Bonus: Just before Trapeze Magician is destroyed, you can see it reaching for the Action Card that Dennis missed.
- Humongous Mecha: Antique Gear Chaos Giant.
- Internal Reveal: The audience was told about Dennis status as The Mole pretty early on, but in this episode he's finally unmasked by Kurosaki to the entire cast.
- Rage Breaking Point: Kurosaki pushes Dennis's buttons for the entire duel, but Dennis maintains a playful manner until Trapeze Magician is destroyed. Then we get Dennis with a creepy voice and the unexpected inclusion of Ancient Gear monsters in his deck.
- Say My Name: Dennis yells out Trapeze Magician's name when it is destroyed by Kurosaki.
- Sixth Ranger Traitor: Dennis is finally revealed as one to the other Lancers, though it's made clear that Reiji and Kurosaki both suspected it:Kurosaki: As I thought, you're from Academia!
- Slasher Smile: Dennis gets one when he summon Antique Gear Chaos Giant.
- "Stop Having Fun" Guys: In-Universe. Kurosaki almost says this word for word to Dennis.
- Wham Shot: While fans expected Dennis to be unmasked as an agent of Academia, no one expected him to use Antique Gears.
- What the Hell, Hero?: The Executive Council ask Reiji why the Lancers have a spy among their ranks. Reiji himself counters beautifully, regardless of the Council's unseen answer.