Apex's Titan Control Plan Backfires as Hiroshi Dies in 'Monarch: Legacy of Monsters' Season 2 Episode 5

The race to stop Apex from mind-controlling the ancient sea monster Co-Cai ends in tragedy for the Monarch team.

Mar. 27, 2026 at 2:10am by Ben Kaplan

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In the latest episode of 'Monarch: Legacy of Monsters' Season 2, Apex's plan to capture and remotely control the Titan Co-Cai goes awry as the team from Monarch intervenes. While Apex sets up an elaborate operation to launch a neural implant at the Titan, Cate's connection to Co-Cai and the Scarabs' defense of the creature disrupt the mission. In the chaos, Hiroshi is mortally wounded, and his children Keiko and Kentaro are forced to say a final goodbye as he passes away. The episode explores themes of family, regret, and the unpredictability of life in the face of the Titan threat.

Why it matters

The death of Hiroshi, a key member of the Monarch team, is a significant development that will impact the group's efforts to understand and protect humanity from the Titans. His complicated relationships with his family and his lifelong fascination with the Titans add emotional weight to the story, highlighting the personal stakes involved in the larger conflict. The episode also raises questions about Apex's motivations and the ethics of their Titan control program, as well as the extent of Cate's mysterious connection to the ancient creatures.

The details

Apex has set up an operation on the island of Santa Soledad, where the Titan Co-Cai is expected to surface, in order to launch a neural implant that will allow them to control the creature remotely. Meanwhile, the Monarch team, including Hiroshi, Keiko, Kentaro, Cate, and Lee, arrives to try and stop Apex's plan. During the confrontation, Cate's bond with Co-Cai becomes apparent, and the Scarabs defend the Titan, disrupting Apex's launch. In the chaos, Hiroshi is severely injured, and his children are forced to say goodbye as he passes away. The episode explores Hiroshi's complicated relationships with his family and his lifelong fascination with the Titans.

  • In 1990, Hiroshi sings a lullaby to Cate while waiting for his wife Emiko to give birth to their son Kentaro.
  • In 2014, Hiroshi receives a package with Bill's name on it, indicating his continued interest in his stepfather's work.
  • In the present day, Hiroshi confronts Keiko about her affair with Lee, which he believes led to Bill abandoning him.

The players

Hiroshi

A key member of the Monarch team who has a complicated history with his family and a lifelong fascination with the Titans.

Keiko

Hiroshi's ex-wife, who had an affair with Lee, which Hiroshi believes led to his stepfather Bill abandoning him.

Cate

Hiroshi's daughter, who has a mysterious connection to the Titan Co-Cai.

Apex

A company that is attempting to capture and remotely control the Titans, including Co-Cai, for their own purposes.

Co-Cai

The ancient sea monster that Apex is trying to control, and which has a connection to the people of Santa Soledad.

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What they’re saying

“The past can't be changed, so just keep moving forward and hope time heals everything.”

— Lee

“I think that's kinda the point of his death. The Titans take on a lot of metaphors; sometimes it's about climate change, other times it's about the repercussions of war. In this case, I think Co-Cai represents the unpredictability of life.”

— Pramit Chatterjee, Author

What’s next

The Monarch team must now regroup and find a way to stop Apex's plans for Co-Cai, while also dealing with the loss of Hiroshi. The future of their mission to understand and protect humanity from the Titans is uncertain, but they are determined to carry on in Hiroshi's memory.

The takeaway

The tragic death of Hiroshi underscores the personal toll of the conflict between Monarch and Apex, and the unpredictable nature of the Titan threat. It serves as a reminder that even the most dedicated and knowledgeable individuals can be taken from us, highlighting the importance of cherishing the time we have with our loved ones and the need to find a way to coexist with the ancient creatures that threaten our world.