Premise 11 year old Johnny Test is a suburban boy who resides in the fictional town of Porkbelly in North America.

Their experiments always cause problems that Johnny and his dog Dukey must resolve and they sometimes fight villains and save the world with their inventions in the process.

On June 11, 2013, Teletoon and Cartoon Network both announced the series' renewal for a seventh season consisting of 13 episodes and a three-part special.

However, in response to a tweet on June 25, 2015, voice actor James Arnold Taylor stated that he wasn't aware of any plans for more seasons.

On May 6, 2020, WildBrain confirmed the series had been picked up by Netflix for two more seasons and a 66-minute interactive special set for release in 2021, with Fellows returning as showrunner and executive producer.