Season 3

The third and final season of 12 Oz. Mouse debuted in 2020, with its first episode airing on April 1st of the said year. Soon after, it was announced that the series had finally returned with a whole season worth of new episodes, which begin airing on July 20th, 2020.

Return
The third season of 12 Oz. Mouse was officially announced on April 1st, 2020, with an all-new episode of the series titled, "Francis, Cheap & Out of Control." After this, the series was picked up for another season, featuring better animation and continuing the series' ongoing lore.

Production & Development
After the airing of "Invictus" on October 14, 2018, the series was then green-lighted by Adult Swim with ten brand new episodes that will be confirmed to be airing in the year 2020 and announced a revival of the series, a editor named "Brad Lee Zimmerman" who worked on the show made a Facebook post about his work on 12 Oz. Mouse.

Notes/Trivia:

 * After being off the air for nearly 14 years, excluding the Invictus special, the series has officially returned with an onslaught of new episodes.
 * This season was originally confirmed to be announced for 10 episodes back in 2018, however later in 2020 the season was confirmed to end up with 11 episodes due to "Francis, Cheap & Out of Control", being season premiere that was made as a April Fools Prank that aired on Adult Swim's April Fools Day.