Inventor of the Bubble Bot and CEO of Bubble, Marc Weidell (Justice Smith) and the COO, Andrew Morris (Rob Delaney), showcase a new invention called the Bubble Bot (becoming commonly known as the B-bot) at a Bubble company presentation.
Meanwhile, Barney Pudowski (Jack Dylan Grazer) has a hard time fitting in to middle school, always being put on the "Buddy Bench" at recess. He celebrates his birthday with his dad, Graham (Ed Helms), and grandmother, Donka (Olivia Colman), and really wants a B-bot considering that everyone else has one. However, his dad gets him a rock hammer instead, leaving him heartbroken.
Later that night, Graham and Donka try to buy a B-bot, but the store closes before they can make it inside. They end up stealing a B-bot instead, which Barney discovers when he wakes up the next day. He thanks them as he sets up his B-bot (Zach Galifianakis), only for the B-bot to not work properly, confusing Barney. He tells the B-bot to stay home while he goes to school. When Barney returns, he discovers that the B-bot knows everything about him, in the wrong way. He heads to the Bubble store to return him. However, on his path, he comes across Rich Belcher (Ricardo Hurtado) and his cronies, who continuously mock him for his love of rocks. Suddenly, Barney's B-bot attacks Rich's gang before they call the police. Shortly after, Barney's B-bot tries to pull off Rich's head before Barney tells him that he can't do that.
This catches the attention of Marc and Andrew, who each have differing perspectives on the matter. Marc sees them having fun, while Andrew sees it as a glitch. Barney rescues his B-bot, whom he now calls Ron, as they head back home. Barney decides to teach Ron how to be his best friend, while Andrew starts to frantically search for Ron, planning on destroying him. One night, while running away from the Bubble company, Barney comes across his classmate, Savannah (Kylie Cantrall), who tells him that if Ron can't make friends, he's pointless. She then explains to Ron the concept of a B-bot.
The next day, Ron gets out of his shed, and clearly misunderstanding what Savannah told him, goes around harassing strangers, offering a piece of toast, putting up Barney's picture all around town, and slapping "friend request" sticky notes everywhere. He ends up bringing several adults to school, including stealing a baby. Barney is sent to the principal's office, leaving Ron behind. Rich ends up copying Ron's code and does some damage to the school. Rich ruins Savannah's reputation, causing her to become known as "Poop Girl" while Barney is expelled from his middle school, blaming Ron for the mistake. Meanwhile, Andrew uses every bought B-bot to spy on Barney. From this point on, scenes with only Savannah involve her B-bot informing her about the "It pooped me" trend, making Savannah either cry or kick her B-bot.
When Barney heads back to his house, he sees Bubble employees waiting there for him, and manages to find Ron before the Bubble employees can get to him. He takes Ron to run off into the woods, asking Savannah to keep their location a secret.
While in the woods, Barney opens up to Ron about his mother's death, while Ron is running out of battery. Seeing that Barney is having an asthma attack, Ron decides to take them back to the town, where Barney's friends find him and Ron, who quickly becomes known as a hero.
In the hospital, Barney meets Marc, who gives Ron to him. However, Barney recognizes that Ron isn't acting like himself, and demands that Marc change Ron's code back. Marc decides to help, after he was kicked out of Bubble by Andrew.
At the Bubble HQ, Marc manages to hack his way into the cloud, where Barney manages to find his friend's code and upload it to Ron. When Barney realizes that everyone is feeling lonely, he decides to upload Ron to the Bubble Network, sacrificing his only friend in a long time. Meanwhile, Andrew gives his position back to Marc, after he exposed that Andrew spies on people and hates kids.
One month later, Barney is allowed back in the middle school and has new friends, including Savannah and Rich, while the B-bots now have minds of their own. Some kids start calling Barney the "king of the bots" as the B-bots all love him.
- Jack Dylan Grazer as Barney Pudowski, a socially awkward middle schooler
- Zach Galifianakis as Ron, Barney's malfunctioning B-bot
- Olivia Colman as Donka Pudowski, Barney's grandmother
- Ed Helms as Graham Pudowski, Barney's father
- Justice Smith as Marc Weidell, the inventor of the Bubble Bot and CEO of the Bubble company
- Rob Delaney as Andrew Morris, the COO of the Bubble company and main antagonist of the movie
- Kylie Cantrall as Savannah Meades, one of Barney's classmates
- Ricardo Hurtado as Rich Belcher, one of Barney's classmates who tries to prank people for views
- Marcus Scribner as Alex
- Cullen James McCarthy as Noah
- Ava Morse as Ava
- Thomas Barbusca as Jayden
- Sarah Miller as Bree
- Bentley Kalu as Cop
- Krupa Pattani as Sita
- John Macmillan as Bubble Techs
- Megan Maczho as Miss Thomas
- Ruby Wax as Ms. Hartley
- Davis Menkin as Shayne the Biker/Mr. Cleaver
- Iara Nemirovsky as Ellie
- Main article: Ron's Gone Wrong (soundtrack)
Henry Jackman composed the film's score. On August 19, 2021, it was announced that Liam Payne had made an original song, titled "Sunshine" for the film. The song was officially released on August 27, 2021.
On the review aggregation website Rotten Tomatoes, the film holds an approval rating of 80% based on 99 reviews with an average rating of 6.60/10. The critical consensus reads: "It isn't the first animated film to confront technology creep, but in terms of striking an entertaining balance between humor and heart, Ron's Gone Wrong gets it right." On Metacritic, the film has a score of 65 out of 100, based on 23 critics, indicating "generally favorable reviews".
- This is the only Locksmith Animation film that 20th Century Studios are releasing as part of a deal, as after the latter's acquisition by Disney in 2019, they formed a new deal with Warner Bros.
- Locksmith's future theatrical releases will be distributed by Warner Bros. under the Warner Animation Group label.
- Following a studio name change by Disney on January 17, 2020, this is the first animated film to be released under the 20th Century Studios name. The second will be The Bob's Burgers Movie.
- 20th Century Studios' second animated film distributed by Disney, after Spies in Disguise.
- This is the first 20th Century Studios' animated film to be rated PG by the MPA.
- This is the first animated film to be co-produced by TSG Entertainment.
- The film was originally going to be distributed by Paramount Pictures under the Paramount Animation label.
- This is the debut feature of Locksmith Animation.
- Marcus Scribner's second animated film, after The Good Dinosaur.
- Olivia Colman's second animated film, after The Mitchells vs. The Machines, both of which were released in 2021.
- This is the first 20th Century Studios' animated film to use the Walt Disney Records logo.
- Jack Dylan Grazer's second animated film for Disney, after Luca, both of which were released in 2021.
- Zach Galifianakis' fourth theatrically animated film after Puss in Boots, The LEGO Batman Movie, and The Missing Link.
- The first animated feature film of Justice Smith and Rob Delaney.
- This is the sixth Disney film Henry Jackman scored after Winnie the Pooh, Wreck-It Ralph, Captain America: The Winter Soldier, Big Hero 6, Captain America: Civil War, and Ralph Breaks the Internet.
- This is the 2nd film that Justice Smith has starred in that is scored by Henry Jackman. The first was Pokémon: Detective Pikachu.
- Throughout the film, the B-bots have the ability to alter their exterior. A couple of them copy the likenesses of Darth Vader, Stormtroopers, Captain Marvel, Black Panther, and Iron Man.
- Originally, the movie was originally set to be released on February 26, 2021, but it was delayed until April 23, 2021, during the COVID-19 outbreak. However on January 22, 2021, it moved to October 22, 2021.
- Following the new deal between Disney and WarnerMedia for 20th Century Studios' films, this is the first 20th Century Studios film to be released on Disney+ without waiting for Pay 1 window for HBO/HBO Max ended.
- Also, it was simultaneously released on HBO Max and Disney+ on December 15, 2021.
- "Henry Jackman Scoring Locksmith Animation's 'Ron's Gone Wrong'". filmmusicreporter.com (February 9, 2021).