The fourth and final season of Jack Ryan is about to debut on Prime Video, and the cast is seeing some major shake-ups in this new instalment.

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While John Krasinski, Wendell Pierce, Michael Kelly and Betty Gabriel are of course back as Jack, James Greer, Mike November and Elizabeth Wright respectively, they are joined this season by Michael Peña and Louis Ozawa.

Peña is playing major Tom Clancy character Domingo Chavez, who is rumoured to be getting his own spin-off, while Ozawa is playing new character Chao Fah.

They are also joined by Abbie Cornish, who is reprising her role as Jack's love interest Cathy after she was notably absent in seasons 2 and 3.

Cornish has said that she made the choice to return because Krasinski had a "really great set-up for this season", which saw each of the characters get a "very strong storyline".

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Read on for everything you need to know about the cast of Tom Clancy's Jack Ryan on Prime Video.

John Krasinski plays Jack Ryan

John Krasinski in Jack Ryan season 4, wearing a coat and scarf
John Krasinski in Jack Ryan season 4. Jonny Cournoyer/Prime Video

Who is Jack Ryan? Jack Ryan is a war veteran and former banker, who at the start of the series took up a desk-based position in the CIA, only to be thrust into the field after he uncovered a terrorist plot. In season 4, he is now CIA Acting Deputy Director, and is tasked with unearthing internal corruption. In doing so he uncovers a series of suspicious black ops that could expose the vulnerability of the country.

Where have I seen John Krasinski before? Krasinski is best known for playing Jim Halpert in the US version of The Office, as well as directing and starring in both A Quiet Place and A Quiet Place Part II. He has also starred in films such as The Muppets, 13 Hours and DC League of SuperPets, and had a cameo role as Reed Richard/Mr Fantastic in last year's Doctor Strange in the Multiverse of Madness.

Wendell Pierce plays James Greer

Wendell Pierce (James Greer) in Jack Ryan season 4
Wendell Pierce (James Greer) in Jack Ryan season 4 Attila Szvacsek/Prime Video

Who is James Greer? When they first met in season 1, Pierce was Ryan's boss who had previously been CIA station chief in Karachi. He is now his firm friend and confidant.

Where have I seen Wendell Pierce before? Pierce is best known for his starring roles in shows such as The Wire and Suits, as well as for his parts in films including Bad Moms, The Gift, Horrible Bosses and Selma.

Michael Kelly plays Mike November

Michael Kelly (Mike November) in Jack Ryan season 4
Michael Kelly (Mike November) in Jack Ryan season 4 Attila Szvacsek/Prime Video

Who is Mike November? Mike November is a former CIA officer who got to know Jack in season 2, when he was CIA station chief in Venezuela.

Where have I seen Michael Kelly before? Kelly is best known for his role as Doug Stamper in Netflix series House of Cards, while he has also starred in Taboo, Black Mirror, Man of Steel, Now You See Me and Transformers: Rise of the Beasts.

Betty Gabriel plays Elizabeth Wright

Betty Gabriel (Elizabeth Wright) in Jack Ryan season 4
Betty Gabriel (Elizabeth Wright) in Jack Ryan season 4 Attila Szvacsek/Prime Video

Who is Elizabeth Wright? Elizabeth was previously the CIA Rome Station Chief, who is now CIA Acting Director.

Where have I seen Betty Gabriel before? Gabriel has previously appeared in series such as Clickbait, Westworld and Defending Jacob, as well as the films Get Out and Upgrade.

Abbie Cornish plays Cathy Mueller

Abbie Cornish as Cathy Mueller in Jack Ryan season 4
Abbie Cornish as Cathy Mueller in Jack Ryan season 4. Attila Szvacsek/Prime Video

Who is Cathy Mueller? In season 1, Cathy was a research physician specialising in infectious diseases who was Jack's love interest. She is now back in Jack's life and they are dating again in season 4, after she was absent from seasons 2 and 3.

Where have I seen Abbie Cornish before? Cornish is best known for starring in films such as Three Billboards Outside Ebbing, Missouri, RoboCop, Seven Psychopaths, Sucker Punch and Limitless.

Michael Peña as Domingo Chavez

Michael Peña in Jack Ryan season 4
Michael Peña in Jack Ryan season 4 Attila Szvacsek/Prime Video

Who is Domingo Chavez? Domingo is a major Tom Clancy character, who in the series is a dangerous CIA operative out for revenge.

Where have I seen Michael Peña before? Peña is perhaps best-known for playing Luis in the Ant-Man movies, while he has also starred in films such as Tower Heist, End of Watch, American Hustle, The Martian, War on Everyone, A Wrinkle in Time, Moonfall and Secret Headquarters. On TV he also had a major role in Narcos: Mexico.

Louis Ozawa as Chao Fah

Louis Ozawa (Chao Fah) in Jack Ryan season 4
Louis Ozawa (Chao Fah) in Jack Ryan season 4. Attila Szvacsek/Prime Video

Who is Chao Fah? Chao is a major player in the new threat Jack is facing in season 4, who at the start of the season is trying to contact Domingo.

Where have I seen Louis Ozawa before? Ozawa has appeared in series such as The Man in the High Castle, Agents of SHIELD, Bosch, Supergirl, Hunters and Pachinko.

Jack Ryan season 4 will start streaming from Friday 30th June 2023 on Prime Video – try Amazon Prime Video for free for 30 days. Plus, read our guides to the best Amazon Prime series and the best movies on Amazon Prime.

For more news, interviews and features, visit our Drama hub, or find something to watch now with our TV Guide and Streaming Guide.

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