For All Mankindseason 5 has cast three new stars as series regulars, revealing character details for the newcomers to Apple TV+’s sci-fi series.For All Mankindseason 5began filming in July 2024, with the story jumping to 2012 where the Goldilocks asteroid has become the center of a mining operation on the newly-built Kuznetsov Station. While not much is known about how the series will progress from this point, it’s unsurprising for new characters to be introduced as older ones age and fall away from the story of US space expansion.

Now,Deadlinehas confirmedInes Asserson (Royalteen), Ruby Cruz (Willow), and Sean Kaufman (The Summer I Turned Pretty) are joiningFor All Mankindseason 5as series regulars. Asserson portrays A.J. Jarrett, a Marine tasked with a mission in space. Cruz will portray Lily Dale, the youngest daughter of Miles (Toby Kebbell) and Amanda (Shannon Lucio). Finally, Kaufman will portray Alex Poletov Baldwin, the son of Kelly (Cynthy Wu) and Ed (Joel Kinnaman). They will be joining existing cast members set to return for the new episodes.

Joel Kinnaman and Mireille Enos For All Mankind Reunion

What For All Mankind’s Three New Cast Members Mean For Season 5

Plenty Of Developments Are Being Hinted At With These Casting Choices

Thecast ofFor All Mankindis constantly changing, with new faces continually cycling through because of the massive time skips that happen between seasons. However,Asserson, Cruz, and Kaufman have proven themselves as talented actors in the previously-mentioned works they’ve been in, making them key additions to the newest season. This especially goes for Cruz’s Lily and Kaufman’s Alex, both of whom are likely to be important for passing the generational baton from one familiar character to their children.

For All Mankind Season 5 Is Giving Me The Joel Kinnaman Reunion I’ve Wanted For A Decade

For All Mankind season 5 has added a former co-star of Joel Kinnaman to the cast, setting up a reunion on Mars almost a decade in the making.

For All Mankindseason 4 endedwith plenty of cliffhangers for its core characters, such as Miles' uprising against NASA’s treatment of detainees, and Kelly seeking life on Mars as the new mining station gets up-and-running. However,Asserson’s A.J. indicates there might be more involvement with the US military going forward, with the Marines getting involved in operations away from Earth for unclear reasons. However, with so much still unknown about season 5, there’s no way of knowing for sure what roles each of the newcomers is going to have.

A composite image of Chantel looking to her right while wearing a spacesuit with Mason walking on the tarmac in a blue jumpsuit in For All Mankind

Our Take On For All Mankind Season 5’s New Cast Members

The Next Generation Is Taking Over

With Alex and Lily being the children of established characters, it seems clear thatFor All Mankindwill be directly passing the baton to the next generation. Given the show’s plans though season 7, as previously confirmed by creator Ronald D. Moore, it makes sense for the series to begin highlighting younger astronauts and adjacent characters who will wind up taking over for the aging cast. With a nine-year time jump already confirmed, the next season is going to feel much different in contrast to what came before.

For All Mankindalso has a spinoff in development,Star City, about the series' Soviet space program.

For all Mankind Season 4 Apple TV Plus Poster

For All Mankind

Cast

Imagine a world where the global space race never ended - For All Mankind is a thrilling “what if” take on history that explores what would have happened in the race to the moon between the Soviet Union and the United States, as well as the space programs and the race’s effects on the astronauts and their families in the aftermath. The Apple TV+ series hails from Ronald D. Moore and stars Joel Kinnaman as a NASA astronaut. For All Mankind also features historical astronauts like Buzz Aldrin and Neil Armstrong.