A bold truth: the MCU is quietly full of hidden players who shape the universe long before they take center stage. But here’s where it gets controversial: some of these figures have already been part of the fabric of the MCU, waiting for the right moment to reveal their true importance. Below is a rewritten, uniquely worded version of the original list, expanded for clarity and beginner-friendly understanding, while preserving all key information and context.
Seven Marvel Characters You Might Not Realize Were Already in the MCU
The Marvel Cinematic Universe often unveils characters with a deliberate, slow-burn approach. When a new face appears on screen, it’s a quick telltale sign of how central they’ll become. For instance, in the Loki Season 1 finale, Loki and Sylvie reach the Citadel at the End of Time to confront the being behind the Time Variance Authority. A man appears, but he doesn’t disclose his identity, calling himself “He Who Remains.” For viewers not in the know, this could be a totally new character designed to complicate Loki’s plans. This mystery becomes clearer later when the story expands in surprising ways.
The moment Ant-Man and the Wasp: Quantumania finally reveals the true role of the antagonist played by Jonathan Majors, Kang—an iconic time-traveling villain from the comics—highlights a broader pattern: not every MCU character is given a dramatic, overt introduction. Some are quietly present, poised to become pivotal later. Here are seven significant Marvel characters who were already part of the MCU, even if their importance wasn’t immediately obvious.
7) Doc Samson
The Incredible Hulk franchise has long stood as the misfit in the MCU’s lineup, but that status is shifting. New developments bring back Red Hulk and Betty Ross, and Samuel Sterns’s persona as The Leader returns to the conversation. Leonard Samson—Betty’s partner from the 2008 film—may not be immediately joining the ensemble, yet his presence is notable. In the comics, Doc Samson is a major figure who gains superpowers and frequently clashes with Bruce Banner’s alter ego. His potential integration into the MCU adds depth to the supporting cast, signaling future interactions that could enrich the Hulk’s narrative arc.
6) Ghost Rider
The Multiverse opens doors to countless past projects, and some deserve canonical reintroduction. Among these, Agents of S.H.I.E.L.D. stands out as a bridge between film and television worlds. Robbie Reyes, the Ghost Rider, is a prime example of a character who could join the broader MCU as the multiverse evolves. The show already laid groundwork for Reyes and his predecessor, Johnny Blaze, to enter the live-action fold, suggesting only a matter of time before they ride into the larger story again.
5) Miles Morales
Peter Parker remains the MCU’s sole Spider-Man for now. Spider-Man: No Way Home (2021) boldly featured three versions of Spider-Man collaborating to defeat a rogue group of villains, underscoring the potential for a broader Spider-Verse within the MCU. Meanwhile, hints persist about Miles Morales—introduced in Sony’s Spider-Verse films—being part of the wider Spider-Man mythos. In Spider-Man: Homecoming, Donald Glover’s Aaron Davis mentions a nephew who needs protection, a subtle nod to Morales that fans have picked up on as the door to a future Miles Morales appearance in live action widens.
4) Silk
Midtown Science and Technology is a familiar backdrop for Peter Parker, especially during his high-school adventures in Homecoming, where he joins the decathlon alongside Liz Allan. One teammate, Cindy Moon, has not had much on-screen time, yet her comic-book identity as Silk carries a compelling backstory. In the comics, Cindy Moon receives the same radioactive spider bite that transformed Peter Parker and becomes Silk, a vigilant hero with her own distinctive powers and motivations. Her potential inclusion would add a fresh, dynamic layer to the MCU’s Spider-Man universe.
3) Captain Britain
Endgame jam-packed a lot for audiences, but some Easter eggs demand closer attention. While Tony Stark and Steve Rogers journey through history to collect Pym Particles, a fleeting moment has Captain America reconnecting with Peggy Carter. Their conversation on a missing field agent named Braddock hints at a lineage that includes the British hero Captain Britain in Marvel Comics. The character’s presence could reframe the British dimension of the MCU if explored further, offering a bridge between Earth’s Mightiest Heroes and the broader British superhero landscape.
2) Union Jack
HYDRA confrontations push Captain America to assemble the Howling Commandos, a team that shines with Bucky Barnes and Dum Dum Dugan. A teammate named James Falsworth often fares in the shadows, but his civilian alias in the comics is Union Jack, a key member of the Invaders. In the MCU, this connection remains a tantalizing possibility, especially for fans craving a stronger connection to Marvel’s World War II-era heroes and the ongoing legacy of Captain Britain’s mythos.
1) The Living Tribunal
The living embodiment of multiversal balance, the Living Tribunal, has not yet appeared on screen in the MCU. Yet its significance is immense: as the supreme authority overseeing the multiverse, this entity represents the cosmic order behind the scenes. Elements reference this figure—Baron Mordo wields a staff linked to the living being, and a statue resembling the Living Tribunal briefly appears in Thor: Love and Thunder. The impression remains that the Living Tribunal operates unseen, maintaining harmony across countless realities. If introduced, this character could redefine how the MCU handles multiversal stakes and govern its most far-reaching storylines.
Discussion and questions
What do you think about these potential inclusions? Do you believe these characters will eventually step into the MCU’s main stage, or should some stay in the background to preserve mystery? Share your thoughts and predictions in the comments—could there be a controversial counterpoint that changes how you view the MCU’s long game? How would you rank these characters by likelihood of appearing soon, and which do you think would have the most impact on future Marvel storytelling?
