The roster for Marvel Cosmic Invasion may have finally reached completion. According to a recent datamine pulled from the game’s demo, two unannounced characters Iron Man and Phoenix were discovered hidden in the code. If accurate, this brings the launch lineup to fifteen playable heroes and villains, capping off what’s already a diverse cast pulled from Marvel’s cosmic Catalog.

Up until now, fans have been speculating over who might round out the roster. The confirmed lineup already included big names such as Spider-Man, Wolverine, Storm, and Captain America, alongside less obvious but welcome choices like Phyla-Vell and Cosmic Ghost Rider. Seeing Iron Man join the fray makes sense, given his prominence across Marvel games and media. Phoenix, on the other hand, feels like the kind of bold inclusion that will excite long-time X-Men fans who hoped the game wouldn’t shy away from mutant representation.

The timing of the discovery is worth noting. Leaks tend to surface close to launch, and in this case the data was uncovered almost immediately after the demo went live. While it’s possible these files are leftovers or placeholders, the evidence lines up with the game’s promotional pattern revealing characters in waves and saving some of the biggest names for last. It also matches earlier rumours that hinted at one Avengers mainstay and one mutant powerhouse being saved as “surprise reveals.”

Iron Man’s inclusion is unlikely to raise eyebrows. He’s a safe bet, a hero whose wide appeal makes him almost essential to a Marvel title. What’s more interesting is how the developers might handle his gameplay. The character has a long history of being difficult to balance in action games, as flight and ranged weaponry can either make him feel overpowered or oddly limited. Fans will be curious to see whether Cosmic Invasion leans into his mobility or focuses more on a grounded, gadget-heavy approach.

Phoenix, however, changes the conversation. Jean Grey’s cosmic alter ego is notoriously powerful, to the point where comics often write her as a near-unstoppable force. Translating that into a playable moveset is no small task. The leak doesn’t reveal specifics, but if she does make the final cut, it could provide some of the game’s most visually striking abilities. Imagine unleashing flaming wings across an interstellar battlefield, or channelling psychic energy to control the flow of combat it’s the kind of spectacle that could make her an instant fan favourite.

Until Marvel Games or the developers themselves confirm the news, these inclusions remain in leak territory. Still, with the demo’s files providing the evidence and previous rosters already aligning with what’s been unearthed, the odds seem strong that Iron Man and Phoenix will be officially revealed soon. For fans, that means the wait to see the full scope of Marvel Cosmic Invasion is almost over.