The series was developed immediately after Batman: The Brave and the Bold ended in November 2011, with the goal of returning Batman to a more serious tone.

Katana was introduced as Batman's new sidekick, with executive producer Sam Register describing her as being like his new Robin, 'but not necessarily'.

Anarky was originally intended to be the main villain of the series, a choice praised by a Wired magazine commentator as relevant to the rise of the Occupy movement and Anonymous hacktivism.

Following the 2012 Aurora, Colorado shooting that occurred during a screening of The Dark Knight Rises, the series' content was altered to make the depicted firearms look less realistic.

Early promotional artwork depicted Alfred as a gun-toting butler fighting alongside Batman, which was not meant for public release and upset fans who felt it contradicted Batman's principles.

Producer Mitch Watson noted that having Alfred fight alongside Batman was problematic because he would be recognized as Bruce Wayne's butler, potentially revealing Batman's secret identity.

The show was produced in 3D computer animation, similar in style to Green Lantern: The Animated Series, requiring inanimate objects like ships and city streets to be fully built as 3D sets rather than simply drawn.

Batman's utility belt was fully recreated out of cardboard and worn by the design team to test how it would function in motion, with batarangs designed to flip open when retrieved.

Extra weight was added to the 3D-modeled Batmobile as it moved on city streets so that its motion would look believable.

The show's opening theme was composed by the rock band Dum Dum Girls, while Frederik Wiedmann composed the background score.

Beware the Batman was pulled from Cartoon Network's schedule after only three to four months, without any official explanation, leading fans to assume it had been cancelled.

Cartoon Network eventually declared the series a financial failure and moved its remaining unaired episodes to the Toonami block on Adult Swim, airing the final seven episodes in a marathon to give the series a proper ending.