Peter Krause Reunites With ‘9-1-1’ Costars After Shocking Onscreen Death: ‘I Like Your Mustache’

The 118 is together again following Peter Krause’s shocking 9-1-1 exit ahead of season 9.

“Peter Krause [and] Ryan Guzman Stache Battle,” Kenneth Choi wrote via Instagram on Friday, July 17, sharing a video of his fellow costars deep in a staring contest of sorts.

In the footage, Krause, 60, and Guzman, 38, each wore baseball caps and sunglasses while looking at one another.

“I like your mustache,” Guzman said, which Krause repeated back.

The two actors subsequently whipped off their glasses, looking inquisitively at each other.

As for the winner of the so-called mustache battle, Choi, 54, had a theory.

“Can you guess who won,” he quipped via Instagram comment, prompting hoards of fans to cast their votes in favor of Krause.

Krause starred as Captain Bobby Nash for the first eight seasons of Ryan Murphy’s 9-1-1, which featured Choi and Guzman as members of his firefighting team. Krause’s character was ultimately killed off in the April 2025 season finale.

When the next season began in October 2025, Bobby’s fire station and wife Athena Grant (Angela Bassett) were left to face their grief after his heartbreaking death.

“We had a very big emotional thing on the show, losing Peter and Bobby Nash, and I know that a lot of the audience took that very personal,” Jennifer Love Hewitt, who plays 911 operator Maddie Han, exclusively told Us Weekly one month earlier. “We did too, and I want the audience to know that. As a cast and as a show, we took it as seriously as they took it. We miss him dearly.”

The ninth season, which concluded in May, featured a handful of tributes to Bobby.

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“He is there in spirit. He’s in our hearts,” Hewitt, 47, told Us at the time. “It’s just a show, and nine seasons in, you have to do things, right? You have to shake things up and you have to tell stories and you have to do those things. But we miss him too.”

Hewitt’s costars overwhelming felt the same, noticing a Krause-sized void on the set.

“He was obviously such a ball of energy, so kind. But I mean, we’re just so lucky to have worked with him when we did,” Corrine Massiah, who portrays Athena’s daughter on the hit drama, told Us. “I mean, he’s literally a father figure, such a kind person. So patient, so kind and yeah, we wish him nothing but the best. Amazing person.”