'Stranger Things' star Gaten Matarazzo reveals why his character will be different in season 2

The kids of "Stranger Things" are still very cute -- but according to star Gaten Matarazzo, they'll have a bit more wisdom in Season 2. In fact, he told AOL Entertainment, they've really grown up.

"They're all still trying to cope with everything that's been going on since the first season. It's obviously a very traumatic experience" coming face-to-face with the Upside Down, he said. "They've grown up a lot, not just in the sense that it's been a year, but in the sense that they almost got eaten by a monster from another dimension, so..."

The 14-year-old actor said that he and his fellow teen costars are "like siblings": "We're all very, very close ... I don't know what I'd do without them," Matarazzo said, adding that the cast keeps in touch outside of filming via group chat.

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Cast of 'Stranger Things' at Hollywood events
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Cast of 'Stranger Things' at Hollywood events
BEVERLY HILLS, CA - JUNE 06: Millie Bobby Brown (L) and Gaten Matarazzo attend Netflix's 'Stranger Things' For Your Consideration event at Netflix FYSee Space on June 6, 2017 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images For Netflix)
Cast members Caleb McLaughlin (L), Millie Bobby Brown and Gaten Matarazzo from the television series "Stranger Things" pose during a Netflix/Fysee event, California U.S., June 6, 2017. REUTERS/Mario Anzuoni
Cast members Caleb McLaughlin (L), Millie Bobby Brown and Gaten Matarazzo from the television series "Stranger Things" pose during a Netflix/Fysee event, California U.S., June 6, 2017. REUTERS/Mario Anzuoni
FILE PHOTO: The cast of "Stranger Things" poses with the awards they won for Outstanding Performance by an Ensemble in a Drama Series backstage at the 23rd Screen Actors Guild Awards in Los Angeles, California, U.S., January 29, 2017. REUTERS/Mario Anzuoni/File Photo
The cast of Stranger Things accepts their award for Ensemble in a Drama Series during the 23rd Screen Actors Guild Awards in Los Angeles, California, U.S., January 29, 2017. REUTERS/Mike Blake
BEVERLY HILLS, CA - JUNE 06: (L-R) Gaten Matarazzo, Noah Schnapp, Millie Bobby Brown, Finn Wolfhard and Caleb McLaughlin attend the 'Stranger Things' FYC event at Netflix FYSee Space on June 6, 2017 in Beverly Hills, California. (Photo by Jason LaVeris/WireImage)
LOS ANGELES, CA - JANUARY 29: Actor Gaten Matarazzo attends the 23rd Annual Screen Actors Guild Awards at The Shrine Expo Hall on January 29, 2017 in Los Angeles, California. (Photo by David Livingston/Getty Images)
LOS ANGELES, CA - JANUARY 29: (L-R) Actors Gaten Matarazzo, Noah Schnapp, and Caleb McLaughlin attend the 23rd Annual Screen Actors Guild Awards Cocktail Reception at The Shrine Expo Hall on January 29, 2017 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)
LOS ANGELES, CA - MAY 07: (L-R) Actors Caleb McLaughlin, Gaten Matarazzo and Noah Schnapp attend the 2017 MTV Movie And TV Awards at The Shrine Auditorium on May 7, 2017 in Los Angeles, California. (Photo by Jeff Kravitz/FilmMagic)
NEW YORK, NY - APRIL 08: Actor Gaten Matarazzo attends Camp IZZE to celebrate the launch of IZZE FUSIONS on April 8, 2017 in Brooklyn, New York. (Photo by Michael Loccisano/Getty Images for Izze Fusions)
(L-R) Gaten Matarazzo, Caleb McLaughlin, and Millie Bobby Brown arrives for the 68th Emmy Awards on September 18, 2016 at the Microsoft Theatre in Los Angeles. / AFP / Robyn Beck (Photo credit should read ROBYN BECK/AFP/Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0524 -- Pictured: (l-r) Actors Gaten Matarazzo, Caleb McLaughlin, Finn Wolfhard, and Millie Bobby Brown during an interview with host Jimmy Fallon on August 31, 2016 -- (Photo by: Andrew Lipovsky/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0524 -- Pictured: (l-r) Jimmy Fallon as Steve Harrington, Gaten Matarazzo as Dustin Henderson, Caleb McLaughlin as Lucas Sinclair, Millie Bobby Brown as Jane 'Eleven' Ives, and A.D. Miles as Barb during the 'Stranger Things' parody on August 31, 2016 -- (Photo by: Andrew Lipovsky/NBC/NBCU Photo Bank via Getty Images)
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Outside of filming the hit Netflix series, Matarazzo has a hectic few months ahead: He teamed up with Holiday Inn as an ambassador for its "Summer of Smiles" program, during which hotels will host family-friendly events including breakfasts with beloved characters like Clifford the Big Red Dog. Meanwhile, Matarazzo's own widely-adored character, Dustin Henderson, has garnered him countless fans of all ages.

"I'm thankful for everything that's been going on in my life," Matarazzo said of his sudden stardom. Although he looks forward to hanging out with hometown friends in New Jersey this summer -- and is sometimes jealous that they have more free time -- he said, "I really can't complain because i've been having a great time doing what i'm doing."

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'Stranger Things' cast hits SAG Awards 2017 red carpet
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'Stranger Things' cast hits SAG Awards 2017 red carpet
(L-R) Actors Finn Wolfhard, Caleb McLaughlin, Noah Schnapp, and Gaten Matarazzo arrive for the 23rd Annual Screen Actors Guild Awards at the Shrine Exposition Center on January 29, 2017, in Los Angeles, California. / AFP / FREDERIC J. BROWN (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images)
LOS ANGELES, CA - JANUARY 29: Actor Millie Bobby Brown attends the 23rd Annual Screen Actors Guild Awards at The Shrine Expo Hall on January 29, 2017 in Los Angeles, California. (Photo by Alberto E. Rodriguez/Getty Images)
LOS ANGELES, CA - JANUARY 29: (L-R) Actors Finn Wolfhard, Caleb McLaughlin, Noah Schnapp, and Gaten Matarazzo attend The 23rd Annual Screen Actors Guild Awards at The Shrine Auditorium on January 29, 2017 in Los Angeles, California. 26592_011 (Photo by Kevin Mazur/Getty Images for TNT)
LOS ANGELES, CA - JANUARY 29: Actor Noah Schnapp attends the 23rd Annual Screen Actors Guild Awards at The Shrine Expo Hall on January 29, 2017 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - JANUARY 29: Actor Finn Wolfhard attends The 23rd Annual Screen Actors Guild Awards at The Shrine Auditorium on January 29, 2017 in Los Angeles, California. 26592_008 (Photo by Frazer Harrison/Getty Images)
LOS ANGELES, CA - JANUARY 29: Actor Caleb McLaughlin attends The 23rd Annual Screen Actors Guild Awards at The Shrine Auditorium on January 29, 2017 in Los Angeles, California. 26592_008 (Photo by Frazer Harrison/Getty Images)
LOS ANGELES, CA - JANUARY 29: (L-R) Actors Finn Wolfhard, Caleb McLaughlin, Noah Schnapp, and Gaten Matarazzo attend the 23rd Annual Screen Actors Guild Awards at The Shrine Expo Hall on January 29, 2017 in Los Angeles, California. (Photo by Jeff Kravitz/FilmMagic)
LOS ANGELES, CA - JANUARY 29: (L-R) Actors Finn Wolfhard, Caleb McLaughlin, Noah Schnapp, and Gaten Matarazzo attend The 23rd Annual Screen Actors Guild Awards at The Shrine Auditorium on January 29, 2017 in Los Angeles, California. 26592_011 (Photo by Kevin Mazur/Getty Images for TNT)
LOS ANGELES, CA - JANUARY 29: Actor Millie Bobby Brown attends The 23rd Annual Screen Actors Guild Awards at The Shrine Auditorium on January 29, 2017 in Los Angeles, California. 26592_008 (Photo by Frazer Harrison/Getty Images)
LOS ANGELES, CA - JANUARY 29: Actor Gaten Matarazzo attends the 23rd Annual Screen Actors Guild Awards at The Shrine Expo Hall on January 29, 2017 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - JANUARY 29: Actor Gaten Matarazzo attends The 23rd Annual Screen Actors Guild Awards at The Shrine Auditorium on January 29, 2017 in Los Angeles, California. 26592_008 (Photo by Frazer Harrison/Getty Images)
LOS ANGELES, CA - JANUARY 29: Actor Millie Bobby Brown attends the 23rd Annual Screen Actors Guild Awards at The Shrine Expo Hall on January 29, 2017 in Los Angeles, California. (Photo by Alberto E. Rodriguez/Getty Images)
LOS ANGELES, CA - JANUARY 29: Actor Millie Bobby Brown attends the 23rd Annual Screen Actors Guild Awards at The Shrine Expo Hall on January 29, 2017 in Los Angeles, California. (Photo by Alberto E. Rodriguez/Getty Images)
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"Stranger Things" is one of Netflix's biggest hits to date, released in July 2016, and its cliffhanger ending left fans frantically asking whether the show would return for a second season. Netflix officially renewed the show for a second season barely a month after its release -- a pretty impressive testament to its massive success.

Since then, the show's primarily teenage cast have become bonafide celebrities, regularly frequenting high-profile Hollywood events. They even took to the Emmys pre-show stage for a rendition of "Uptown Funk" in front of countless celebrity guests.

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