Trekkies will gather Tuesday to place memorial flowers on Walter Koenig's star on the Hollywood Walk of Fame, two days after the actor who played Ensign Pavel Chekov on the original "Star Trek" series died at 90.

mynewsla.com reports the tribute was organized for the star Koenig received on September 10, 2012, when he became the final member of the original series cast to be so honored.

Hollywood Walk of Fame producer Ana Martinez said in a statement that Koenig "brought humor, warmth, and a spirit of adventure to a series that inspired the world."

The star itself is a fitting locus for grief because it marked a late-career reversal for an actor whose character was originally engineered as teen bait.

According to Variety, Chekov was added in the show's second season to appeal to younger viewers, with producers noting Koenig's resemblance to The Monkees' Davy Jones — even though Koenig was only five years younger than William Shatner and Leonard Nimoy.

Leonard Nimoy joked at the 2012 ceremony that "something unexpected happened" and Koenig turned slim dimensions into "a three-dimensional flesh-and-blood person," a quote CNN also carried. Fans returning to the star are honoring that unexpected depth.

Koenig's representatives told Variety that he passed away of old age at his North Hollywood home, surrounded by his daughter and niece.

His agent, Zachery McGinnis, said in a statement that the actor's "legacy extends far beyond the screen," citing his countless convention appearances and his understanding of what "Star Trek" meant to its community.

ABC News confirmed the death with Koenig's agent and noted that George Takei also shared the news online Monday, writing that "Walter was more than Chekov. He was a writer, a teacher, a thoughtful man, and a loyal friend."

CNN reports he played Alfred Bester, a telepathic villain, on "Babylon 5" starting at age 57, calling it "the Act II of my life in television." CNET notes he voiced Chekov in video games and wrote for shows including "Land of the Lost."

Variety details his memoirs, his satiric novel "Buck Alice and the Actor-Robot," a three-decade stage career, and a 2026 Platinum Award for Best Actor for the short film "Mr. Fleischmann."

mynewsla.com adds that his death leaves William Shatner and George Takei as the only surviving core cast members.

For a fandom that Koenig actively embraced, the memorial is also a marker of time. Chekov, introduced at the height of Cold War tension, embodied a future in which a proud Russian character was one of the "good guys" aboard a diverse crew, a point CNN and CNET both emphasize in their obituaries.

Koenig's family has known public tragedy before: his son Andrew died by suicide in 2010, and his wife Judy Levitt Koenig died in 2022, according to ABC News.

Koenig's representatives closed their statement to Variety with the line, "Thank you, Walter, for the memories, the inspiration, and for boldly going where few have gone before."

His last on-screen turn as Chekov came in the 2015 fan-produced "Star Trek: Renegades" — for which, per CNN, he stipulated the character be killed off — though he voiced Chekov again for "Star Trek: Picard" in 2023.