Dan Fogelman says he only agreed to make Paradise if Sterling K. Brown would play its lead — and that single condition tells you a lot about the show’s ambitions. Here’s what we know now, who the principal character is, and why questions about characters like “Alex” and actors such as Julianne Nicholson are still swirling.

What happened: the deal behind Paradise

When Dan Fogelman shopped the premiere script for Paradise, he says there was one nonnegotiable: Sterling K. Brown had to play protagonist Xavier Collins. In a 2025 interview with IndieWire, Fogelman admitted he worried Brown would turn down another TV commitment, adding, “Oh no, Sterling is not going to want to do another TV show with me. And if I don’t get him …” The implication was clear: the series, a high-concept mix of post-apocalyptic drama, political thriller, sci-fi and Western elements, needed Brown to anchor its tonal shifts.

Who is the lead?

Sterling K. Brown plays Xavier Collins, the central figure around whom Paradise’s eclectic genre mash-up revolves. Brown’s track record — from Randall Pearson on This Is Us to movie roles in Marshall and American Fiction — is exactly the kind of range Fogelman wanted to ground a daring, tonal series.

Who is Alex on Paradise?

Fans have asked repeatedly, “Who is Alex on Paradise?” Based on the reporting used here, there is no widely published, detailed profile for a character named Alex linked to the show’s premiere episode. If Alex is a role in later episodes or part of an ensemble, those casting details have not been confirmed in the sources referenced for this story.

If you want a definitive answer, check Hulu’s official cast listings, episode credits, or Fogelman’s press statements for full cast breakdowns as they are released. Casting can change between development and release, and sometimes supporting characters are kept deliberately mysterious.

Is Julianne Nicholson involved?

Julianne Nicholson’s name has come up in audience conversations, but the materials used here do not confirm her participation in Paradise. Nicholson is a respected actor with a long track record in film and television, which makes her a frequent subject of casting speculation for prestige dramas. Until an official casting announcement arrives from Hulu or the show’s producers, her involvement remains unverified.

Fan and industry response

The biggest industry takeaway is the reunion of Fogelman and Brown. After six seasons of This Is Us, their creative shorthand raised expectations that Paradise will lean on Brown’s ability to carry emotionally layered material while navigating genre shifts.

Early reaction from trade outlets has focused on the show’s tonal ambition and Brown’s attachment as a vote of confidence. Social conversation has centered on who will join the cast, how the series will balance its many influences, and whether it can match both critical and audience expectations set by the creators’ past work.

What to watch for next

  • Official Hulu press releases and credits for full cast lists (to confirm characters such as Alex).
  • Interviews or festival appearances from Fogelman and Brown outlining tone, episode count and premiere timing.
  • Trade outlets like IndieWire for ongoing production updates and review embargoes as the show approaches release.

For now, Paradise’s biggest headline is simple: Dan Fogelman wanted Sterling K. Brown so much he wouldn’t move forward without him. That creative insistence sets expectations that the series will be built around a powerful central performance — and also leaves several casting and character questions, including the identity of Alex and any involvement from Julianne Nicholson, waiting for official confirmation.