Rob Gronkowski Goes Undercover as Dr. Doom at NY Comic Con

Rob Gronkowski Brings Dr. Doom to NY Comic Con

Rob Gronkowski stepped into Marvel territory at NY Comic Con 2026, appearing at the Javits Center dressed as Dr. Doom while helping promote Marvel's upcoming film, Avengers: Doomsday. The former NFL star moved through the convention floor in character, taking part in a crossover moment that blended comics, collectibles, and live-streamed fan content.

Gronkowski teamed up with eBay Live for the appearance and was hosted by PCBHobby for what was described as a first-class lesson on the Marvel Universe and the storylines fans should know heading into the next major film. The event marked the second installment of Gronk Geeks Out, the live-streamed series Gronkowski is doing with eBay Live.

The appearance also fit into a broader trend of sports and entertainment crossover content in the hobby, where athletes, comics, and trading cards continue to overlap in front of collectors.

What Avengers Fans Are Being Told to Watch

With Avengers: Doomsday scheduled for Dec. 18, 2026, the source highlighted a long list of Marvel projects fans may want to revisit before the film arrives. The viewing path stretches back to the early 2000s and runs through several key chapters of the Marvel Cinematic Universe and related stories.

For more collecting context, read Card Care vs. Card Alteration: Where Is the Line?.

• X-Men - introduces the legacy mutants.
• X2 - expands on mutant dynamics.
• Captain America: The First Avenger - introduces Steve Rogers and his importance.
• The Avengers - introduces the Avengers.
• Avengers: Infinity War - centers on the fight against Thanos.
• Avengers: Endgame - shows the fallout of the Infinity Stones and resets the timeline.
• Loki seasons 1 and 2 - introduces the Time Variance Authority.
• Shang-Chi and the Legend of the Ten Rings - introduces key heroes and the mystic rings.
• Spider-Man: No Way Home - introduces multiversal crossovers.
• Black Panther: Wakanda Forever - explores the relationship between Wakanda and Talokan after T'Challa.
• Captain America: Brave New World - reflects the current state of Earth.
• Deadpool & Wolverine - brings together X-Men and other characters.
• Doctor Strange in the Multiverse of Madness - focuses on alternate realities.
• Thunderbolts - centers on an active anti-hero team.
• The Fantastic Four: First Steps - sets up Dr. Doom.

Why Dr. Doom Matters to Marvel Collectors

The article also pointed to growing attention on Dr. Doom in the collectibles market. Topps has already moved heavily into comics, and the use of athletes to help promote Marvel content suggests the hobby could see even more crossover appeal with collectors.

Avengers: Doomsday will feature Robert Downey Jr. as Doctor Doom, a casting choice made possible through the multiverse. The source noted that Downey Jr. previously played Iron Man, but this version of the character exists outside Tony Stark's timeline.

Dr. Doom is described as one of the most dangerous villains in the Marvel Universe, with intelligence, advanced technology, and mastery of the mystic arts making him a major figure in Marvel storytelling. The source also described him as the second strongest villain in the Marvel Universe, behind Kang the Conqueror, while placing Thanos around fifth among the deadliest villains seen on screen.

Related coverage includes Rob Gronkowski’s Dr. Doom NY Comic Con Appearance Spotlights Marvel Card Market.

Marvel Doctor Doom Cards Draw Big Sales

The growing spotlight on Doctor Doom is also showing up in the trading card market. The source cited two recent high-end sales tied to Doom cards and noted that the character's cards have become highly collectible.

One example was a 2025 Topps Chrome Marvel Mint Superfractor Doctor Doom PSA 9, with the source stating that the highest sale of any Victor von Doom, or Dr. Doom, card reached $30,300 on Sept. 25, 2026.

Another example came from Topps Chrome Sapphire Marvel product, which also produces Marvel cards. A 2024 Topps Chrome Marvel Sapphire Doctor Doom Black Refractor /10 PSA 10 sold for $25,350 on Sept. 19, 2026.

Those results underscore the demand around Doctor Doom as Marvel builds toward Avengers: Doomsday and as collectors continue to chase premium Marvel cards tied to major characters and key film moments.

Topps Marvel Cards Keep Expanding

The source pointed to Topps' ongoing push into comics and Marvel-themed collectibles as part of the broader hobby landscape. With athletes like Gronkowski helping promote Marvel content and live-streamed hobby events reaching wider audiences, Marvel cards continue to gain visibility beyond traditional comic and entertainment circles.

As Avengers: Doomsday approaches, Doctor Doom is positioned to remain one of the most watched characters across film, comics, and the trading card market. Gronkowski's Dr. Doom appearance at NY Comic Con added another high-profile moment to that momentum, giving fans a mix of cosplay, Marvel lore, and hobby buzz in one event.