Room star Jacob Tremblay returns to the spotlight 11 years after Oscar-winning thriller... see him now at 19

Jacob Tremblay made a massive impression at only eight years old with his breakout performance as Jack in the 2015 psychological thriller Room.Now 19, the former child star looked very different and all grown up as he turned up to support his new Netflix film, Unabomber, at a New York screening alongside co-star Annabelle Wallis and director Janus Metz on Thursday.Tremblay, who previously stunned fans with the news of his casting in the psychological thriller – and his transformation, sported tousled hair and a confident expression as he posed in front of the cameras, looking casually cool in a black dress shirt with rolled up sleeves, black trousers and black shoes.He has the starring role as the young Ted Kaczynski, who would eventually become the universally feared Unabomber.The film, which premieres on the streamer on September 25, follows Kaczynski's transformation from 16-year-old Harvard math prodigy to domestic terrorist who terrorized the United States for nearly two decades.Unabomber flips back and forth from Kaczynski's time attending the famed university and the manhunt that became one of the longest and most expensive in FBI history. Room star Jacob Tremblay looked very different and all grown up as he turned up to support his new Netflix film, Unabomber, at a New York screening on Thursday The young star made a massive impression at only eight years old with his breakout performance as Jack in the 2015 psychological thriller. Above, Tremblay in February 2026 attending the OscarsRussell Crowe plays Professor Henry Murray, who subjected Kaczynski to a psychologically abusive stress experiment while he was an undergraduate at Harvard.Tremblay may still be best remembered for his portrayal of Jack Newsome, a five-year-old boy who has been kept captive all of his life in a small locked room with his mother (Brie Larson).Tremblay, who was eight years old when filming on Room began, delivered a natural and heartbreaking performance that wowed the critics and earned him a Critics' Choice Movie Award for Best Young Performer.Though he didn't make the list of Oscar nominations, the film received four nominations and his co-star Larson took home the Best Actress trophy.Since then, the Canadian-born actor has maintained a steady career with major film, voice and television roles.He starred in Wonder (2017) opposite Julia Roberts and Owen Wilson, playing a boy with Treacher Collins syndrome, a rare genetic condition characterized by deformities in the face and skull.Other movie credits have included The Book of Henry (2017), The Predator (2018), Good Boys (2019), Queen of Bones (2023) and the upcoming flick Wildwood.Tremblay lent his voice to several projects in the years since Room, such as Luca (2021), The Little Mermaid (2023), and Orion and the Dark (2024). Tremblay, who was eight years old when filming on Room began, wowed the critics and earned a Critics' Choice Movie Award for Best Young Performer In Room, Tremblay played Jack Newsome, a five-year-old boy who has been kept captive all of his life in a small locked room with his mother (Brie Larson) Tremblay sported tousled hair and a confident expression as he posed in front of the cameras The actor, who plays a young Ted Kaczynski in the movie, was joined on the red carpet by co-star Annabelle Wallis Unabomber, which premieres on Netflix on September 25, follows Kaczynski's transformation from 16-year-old Harvard math prodigy to domestic terrorist who terrorized the United States for nearly two decades. Above, Tremblay in a scene with co-star Russell Crowe In June 2024, a lot of fans were in for a shock when the then-17-year-old shared pictures from his high school graduation and wearing the signature robe with cap in hand.He spoke about what it felt like being so young and yet being in the business for a decade in a January 2024 interview with Coming Soon.'It's definitely interesting, because I definitely am very experienced on set, but I feel like — even for the biggest stars in the world — there's always something to learn,' Tremblay said.'I'm just excited to do future projects. I like playing a bunch of different characters, so I'm excited to see where that takes me and what characters I get to play and do research behind the character. I'm really excited for my future.'