Marvel's Wonder Man was never your typical superhero series. From its meta take on Hollywood to its sharp satire of the entertainment industry, the show stood out as one of the MCU's most refreshing small-screen experiments. It even scored Marvel's first acting Emmy nomination since WandaVision, thanks to Yahya Abdul-Mateen II's standout performance. But beyond the critical acclaim, the series was packed with celebrity cameos—and one of the most unexpected belonged to Ashley Greene, best known for her role as Alice Cullen in the Twilight saga.

In the premiere episode, Greene appears as a heightened version of herself, cast opposite Simon Williams (Abdul-Mateen II) in a fictional season of American Horror Story. Her character is supposed to undergo a monstrous transformation for a death scene, but Simon's over-the-top preparation derails the entire production, leading to his dismissal. It's a clever, self-aware moment that sets the stage for Simon's journey—and for Greene, it was an experience unlike any other.

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During a FanX Salt Lake City panel alongside her former Twilight co-star Jackson Rathbone, Greene opened up about the surreal nature of playing herself. "It's the weirdest thing I've ever done. I don't recommend it," she joked. "I think it's kind of the same thing where it's, if you enjoy playing a character, there's a certain kind of barrier you have doing that. So it's just a weird thing to be like, 'How do I do that? How do I say that?' So, it was quite weird, but it was very fun."

What makes Greene's cameo even more remarkable is how it came together. It wasn't part of the original plan—it was a last-minute scramble. "A casting director called me and said, 'Someone dropped out. Do you want to do this? Could you do it?'" Greene recalled. "I was like, 'Yeah, of course I do! Are you kidding me?' And so I just kind of ended up filling in for someone who couldn't do it." She never learned who was originally supposed to take the role, but she's grateful for the opportunity to become part of MCU lore.

The secrecy surrounding Marvel productions meant that even Greene's closest colleagues had no idea she'd joined the show. Rathbone, who watched the series with his wife, was completely caught off guard. "I'm literally watching it with my wife, and she's like, 'Did you know?' And I was like, 'No!'" he exclaimed. The surprise was a pleasant one, though Rathbone was quick to praise the series—and Greene's cameo—when discussing why he was disappointed that Wonder Man won't be returning for a second season.

"And then they're not going to do a second season, which bummed me out," Rathbone said. "It's honestly one of my favorite Marvel shows they've ever done. Honest to God, the lead actors—I mean, all the actors on there. There's this one actress who made a cameo in the first episode; I'm like, 'Damn!'".

Greene's journey to the MCU is a perfect example of the unpredictable, often chaotic nature of Hollywood. It's a story that could have been ripped straight from Wonder Man's own script—a last-minute fill-in, a secret shoot, and a cameo that fans are still talking about. For Greene, it was a wild ride, but one she's happy to have taken.

If you haven't seen Wonder Man yet, the entire series is streaming on Disney+. And for more from the FanX Salt Lake City panels, stay tuned to Collider throughout the weekend.