For the first time, Laz Alonso has spoken publicly about what it was really like filming dialogue scenes with Karen Fukuhara for the final season of The Boys. The actor, who plays Mother’s Milk (MM) on the Prime Video series, shared new details during recent convention appearances, revealing how the show’s endgame brought unexpected changes to their longtime working relationship.
The fifth and final season of The Boys is set to premiere on Prime Video on April 8, 2026 . As production wraps on the series that started in 2019, cast members are reflecting on their journeys together. Alonso’s comments about Fukuhara mark the first time he has addressed how their on-screen partnership evolved in Season 5.
A Partnership Years in the Making
Laz Alonso and Karen Fukuhara have shared screen time together since the very first season of The Boys. Their characters, MM and Kimiko, started as strangers brought together by Billy Butcher’s mission to take down corrupt superheroes. Over four seasons, viewers watched their bond grow from wary allies to trusted family members within The Boys team.
Fukuhara’s role as Kimiko presented a unique challenge from the beginning. Her character was rendered unable to speak after being forced to become a child soldier and subjected to Compound V experiments. For most of the series, Kimiko communicated exclusively through sign language and facial expressions, with Fukuhara delivering powerful performances without dialogue.
Alonso’s MM served as the strategic planner of the group, often clashing with Butcher’s methods while forming quiet bonds with other team members. His scenes with Kimiko developed into some of the show’s most tender moments, built on trust and mutual protection rather than words.
The Shift in Season 5
Speaking at Emerald City Comic Con 2026 in Seattle, Alonso revealed that Season 5 finally changed the way he worked opposite Fukuhara. While he did not disclose specific plot points, the actor confirmed that the dynamic between their characters shifted in ways that affected their actual filming process.
“It did change the dynamic,” Alonso said during the panel . The statement came during a broader conversation about what fans could expect from the final episodes. Alonso was joined on stage by Karl Urban, who plays Billy Butcher, and other cast members who teased the emotional weight of the ending.
The shift likely connects to major developments in Season 4, when Kimiko began speaking again for the first time since the series began. After years of silence, her character uttered her first words in a breakthrough moment that shocked fans and opened new storytelling possibilities. Tomer Capone, who plays Frenchie, discussed filming those scenes with Fukuhara during San Diego Comic-Con in July 2024, calling the experience powerful for the entire cast .
Tissues and Fluids: What to Expect
During the same Emerald City Comic Con appearance, Alonso repeated a warning he first gave at MCM Comic Con London in October 2025. He told fans to keep tissues nearby when watching Season 5, but his co-star Karen Fukuhara quickly added a characteristically Boys-style clarification.
“For all kinds of fluids. All the fluids,” Fukuhara said, which Alonso did not deny . The exchange highlighted the show’s signature blend of emotional storytelling and over-the-top gore. Alonso confirmed that viewers should expect him to appear “very dirty” throughout the final season, noting that showrunner Eric Kripke deliberately wrote MM into messy situations after learning Alonso personally dislikes being covered in substances on set .
The Endgame for Kimiko and MM
Neither actor has revealed specific details about their characters’ fates, but the teaser trailer for Season 5, released during CCXP Brazil in December 2025, offered glimpses of what is to come. The preview showed moments between Frenchie and Kimiko that fans described as touching and heartbreaking . It also featured MM delivering a grim warning: “We ain’t survivin’ this f—ing war. We are dead men walking” .
The tone suggests that not every member of The Boys will make it out alive. For Fukuhara, who joined the cast later than some of her co-stars but quickly became essential to the ensemble, the final season represents the culmination of years of physical and emotional work. At MCM London, she spoke about how welcomed she felt joining the established group and how the cast bonded over the years .
Guinness World Records Recognition
The cast’s convention appearances have also brought recognition for the show’s massive popularity. During the MCM London panel in October 2025, Karl Urban, Laz Alonso, Tomer Capone, and Karen Fukuhara were surprised on stage by representatives from Guinness World Records. The series was awarded two records: Most In-Demand Action-Adventure TV Show and Most In-Demand Superhero TV Show .
Urban accepted the awards on behalf of the cast, thanking fans for making the show a success. The recognition came just months before the final season’s premiere, marking a high point for the series as it prepares to conclude.
Filming the Final Scenes
Production on Season 5 has been underway for months, with the cast filming scenes that will bring their characters’ stories to a close. For Alonso and Fukuhara, that meant finally sharing dialogue scenes after years of one-sided conversations.
The experience of speaking opposite Fukuhara after so long brought new energy to their work, according to Alonso’s comments. While he stopped short of calling the experience emotional, his choice to address it publicly suggests the shift carries weight for both characters.
Fukuhara has not yet commented specifically on the dialogue scenes, but her past interviews show deep investment in Kimiko’s journey. At San Diego Comic-Con in 2024, she discussed the responsibility of portraying a character who finds her voice after years of silence . Season 5 will reveal where that voice takes her.
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A Final Season Years in Planning
Showrunner Eric Kripke has always planned for The Boys to end with Season 5. He announced the conclusion in June 2024, writing on social media that the final season would bring the story to a “bloody, epic, moist climax” . The writers room opened about a month before Season 4 premiered, giving the team roughly two years to craft the ending .
Kripke told Deadline that he has known the final moments of the series for some time. “I know that moment where the title card comes up and it says six months later, and you see where everybody is,” he said. “I can really write the last 10 pages of this story right now” .
For Laz Alonso and Karen Fukuhara, those last pages include scenes together that finally let them act opposite one another with both characters speaking. After four seasons of building trust without words, Season 5 will show what MM and Kimiko have to say to each other when it matters most.
The Boys Season 5 premieres on Prime Video on April 8, 2026 .
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Catch up on all our exclusive coverage from the The Boys final season panel at Emerald City Comic Con 2026.
