Actor Jensen Ackles said he had no idea “Supernatural” would last 15 seasons.

“I didn’t think we’d last more than three seasons. I was excited by the success of that because if you get anything more than three seasons of a show, that’s a runaway success,” Ackles said. “The fact that we got to 15, nobody could’ve predicted that, never in a million years. I’m still very proud of every episode we did, very proud of every season we completed, and very proud of every story we told. I’m sure there were some that may not have hit as hard as some of the other storylines, but I’m proud nonetheless.”

Ackles (Dean Winchester), Misha Collins (Castiel), Richard Speight, Jr. (Loki and Gabriel), Samantha Smith (Mary Winchester), Alaina Huffman (Abaddon), Alexander Calvert (Jack), Jim Beaver (Bobby Singer), Mark Sheppard (Crowley), Rob Benedict (God/Chuck), and more will attend Creation Entertainment’s “The Road So Far … The Road Ahead: Celebrating 20 Years of SPN” at the Suburban Showplace Collection in Novi on Friday through Sunday, July 11-13. This is Michigan’s first convention dedicated solely to “Supernatural.”

“We’re super excited! Man, we’re a well-oiled machine. We’ve never been there and we’ve been doing this convention all over the United States and Europe for a long time. It’s always fun to bring it to a new market because we get to connect with a whole new group of people who love the show but haven’t been able to celebrate it with us in person, so it’s gonna be great!” Speight said. “As actors on the show, we don’t get to see the people who watch it and love it. We do our job in a vacuum on a soundstage and go about our business and hope the show connects with people. Conventions give us that opportunity to meet and bond with the people who kept the show on for (15) years. It’s a special time to be with the people who kept the show popular its entire run. You do live theater, you hear applause. You do standup comedy, you get laughter. You do a TV show, you don’t hear anything, you don’t see anything. With a convention, all that comes together and makes it really unique and special.”

“Supernatural” chronicles the adventures of the Winchester brothers, Dean and Sam (Jared Padalecki), who travel the country in their 1967 Chevy Impala, called Baby, to hunt monsters.

“‘Supernatural’ is not loved because it’s a show about monsters; it’s a show about brothers,” Ackles said. “It’s the love story of two brothers, to be honest.”

“The show is about the two brothers and their connection,” Huffman said. “In television, we always say the No. 1 sets the tone. In this case, it’s a shared title, it’s Jared and Jensen. … They’re just really solid guys. They learned early on their longevity and staying power would be based on their relationship and that transcends the show and also real life. We’ve just felt that we’ve been welcomed into this big, beautiful family. We can’t describe it; it’s lightning in a bottle and we’re so grateful for it.”

Created by Eric Kripke, “Supernatural” — a cross between “Buffy the Vampire Slayer,” “Angel,” “The X-Files” and “Route 66” — debuted Sept. 13, 2005, on The WB to modest ratings. Throughout its 15 years, “Supernatural” has survived two networks, three network presidents, five showrunners, multiple timeslots, a writers’ strike and COVID-19. It concluded Nov. 19, 2020, after 327 episodes. Its spinoff, “The Winchesters,” ran from 2022-23.

“‘Supernatural’ wasn’t just a show. It was an anchor in my life. From the moment it premiered, it walked beside me through motherhood, heartbreak, reinvention and healing. The Winchesters felt like family; their story stitched into mine. This fandom gave me purpose and friendship. It will forever be a part of who I am,” said Lindsay Warren of Royal Oak.

Warren has raised more than $100,000 via the show’s fanbase for various charities, including A Dog’s Life and St. Jude’s. Even the stars have used their celebrity status to raise awareness. Always Keep Fighting is Padalecki’s campaign to raise awareness against the stigma of mental illness. Collins co-founded Random Acts, a nonprofit organization dedicated to funding and inspiring acts of kindness worldwide.

“It’s fantastic how supportive the fans have been since the show started. For years, it would be on the bubble, meaning it wasn’t guaranteed a pickup, but it got it and the fans would stick with it. It would move nights and the fans would stick with it. It would move timeslots and the fans would stick with it,” Speight said. “It has, honestly, been the stuff of television history — how dedicated and loyal the fans have been and passionate they continue to be even with the show no longer being produced. They watch it on streamers, own the DVDs, come to conventions, and support the show like it’s still being shot, which is incredibly rare and remarkable. Being part of something that has that connection and support is really unique and amazing.”

Speight shared his insight on the show’s staying power.

“Kripke created an airtight universe with a specific mission and cast two outstanding actors (Padalecki and Ackles). Along the way, he picked up remarkable performer after remarkable performer,” he said. “You go down the list of the people who came into this show and went on to become stars in their own right — Sterling K. Brown, Leslie Odom Jr. It continued to pick up actors who are remarkably solid and contributed their talents to the show.”

Speight continued: “It just kept running along when you went from Kripke showrunning to Sera Gamble showrunning to Jeremy Carver showrunning to Andrew Dabb showrunning to Robert Singer showrunning, the show never lost a step. It kept reinventing itself. It kept staying true to the characters that launched it. It kept tapping into the talents of the cast and crew. Honestly, the show could’ve still continued if Jared and Jensen wanted it to. That’s a remarkable testament to the power of a well-thought-out plan and a well-executed TV program.”

Laura Conner of Auburn is rendezvousing in Novi with Angie Stillson of Mishawaka, Indiana, and Barbara Jones of Covington, Louisiana. The three met at “Supernatural” conventions and became lifelong friends.

“I started watching ‘Supernatural’ in the 11th season,” Conner said. “I was a little late to the party. I was newly divorced and in a bad mental state at the time. I binged all 11 seasons in less than four months. I learned about the conventions and have met some of my bestest friends through them. Now it’s coming to Novi, I get to see my friends again. I met Angie in Chicago in 2016. I met Barbara in Nashville in 2018. We all met up in Indianapolis later that year. We haven’t been together at a convention since 2018, so I am very excited about this. The lifetime of friendships ‘Supernatural’ conventions has brought me has made each day brighter. I can’t wait to see everyone!”

According to Speight, a “Supernatural” convention is an experience unlike any other.

“We’re not just a parade of actors from the show; we are an experience,” he said. “We are funny, intimate, musical. It is a party from the moment Friday kicks off to the last acoustic, post-concert notes Sunday night. In any capacity you want to go — be it all three days, one day, just for the concert — you’re gonna have a great time because it’s a celebration of a show at a level you have yet to experience. We’re thrilled to be able to bring it to you and hope you’re there to enjoy it with us.”