Mark Ruffalo's splitting-image son makes TV debut alongside Hollywood dad in new drama series Hal & Harper
Keen Ruffalo, 24 and dad Mark worked on the project together. (Instagram)

Mark Ruffalo’s splitting-image son makes TV debut alongside Hollywood dad in new drama series Hal & Harper


Multi-award winning actor Mark Ruffalo will return to screens – with a very special family appearance. 

Fans love and know the three-time Oscar nominee as The Hulk in the billion dollar Avengers franchise.

In June 2025, Ruffalo will take a lead in the brand new drama-comedy Hal & Harper. Only this time, he’s playing a dad – with his own son, 24-year-old Keen, revealed to make a surprise on-screen appearance.

The brand new series Hal & Harper premieres June 26, only on Stan. 

As Stan released a first-look trailer this week, it’s been confirmed Ruffalo’s son Keen will have a recurring cameo in the heartwarming series.

This will be an exciting TV debut for the young actor – and a sure treat for fans once you spot the pair’s uncanny resemblance.

Mark Ruffalo and Keen Ruffalo
Keen Ruffalo, 24 and dad Mark worked on the project together. (Instagram)

The father and son duo join A-list cast Cooper Raiff (Cha Cha Real Smooth) and Riverdale star Lili Reinhart in what fans are already calling a TV “masterpiece”.

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Ruffalo plays father to on-screen siblings Hal (Raiff) and Harper (Reinhart) in a journey that follows the relatable yet dysfunctional trio.

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The “tragic, complicated and amazing” series follows the co-dependent siblings doing their best to navigate long-term relationships, friendships and situationships.

Their lives however are turned upside down when their dad (Ruffalo) makes a big announcement.

Catch an first look at the series in the video below: 

In real life, Ruffalo is father to three children with wife Sunrise Coigney: Keen, who is turning 24 in June, and daughters Bella, 20, and Odette, 17.

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In Hal & Harper, Keen will play Hal’s roommate in the series. But this isn’t the first time the young actor has shared a screen with his father.

Mark Ruffalo with wife Sunrise Coigney Sunny Ruffalo and son Keen
Mark and wife Sunny had Keen in 2001. (Instagram / @markruffalo)

In 2017, Keen reportedly had a uncredited role in Marvel blockbuster Thor: Ragnarok alongside his father’s iconic return as Bruce Banner.

Keen’s film credits also include an appearance in drama-comedy Begin Again (2013) starring Mark Ruffalo and Keira Knightley.

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While Keen has a small speaking role in Hal & Harper, it’s certainly a fun a piece of trivia fans can look out for!

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In the series, fans can expect a sibling connection built on a lifetime of inside jokes and hardship, as it brilliantly delves into past trauma through flashbacks featuring Raiff and Reinhart as their younger selves.

“I was thinking of kids growing up too fast and that is where the idea of the show came from,” said actor, creator and executive producer of the series Cooper Raiff.

Cooper Raiff, Mark Ruffalo, Betty Gilpin and Lili Reinhart in Hal & Harper on Stan
Cooper Raiff, Mark Ruffalo, Betty Gilpin and Lili Reinhart in Hal & Harper on Stan. (Stan)

“The family’s childhood house is on the market and they go back in time to deal with the pain the house holds. To get unstuck and heal. I hope people who watch the show can find a similar sense of healing,” he said.

Hal & Harper debuted at this year’s Sundance Film Festival to great acclaim, and will premiere in Australia on June 26, only on Stan.

The brand new series Hal & Harper premieres June 26, all episodes at once and only on Stan. 

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Nine Entertainment Co (the publisher of this website) owns and operates the streaming service Stan.

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