Despite being aimed at children, due its cultural differences depending on each region, the anime is infamously known for its use of adult-oriented and controversial themes.

[4] The second season introduces Popee's father, Papi, the senior clown of the Wolf Circus, who often acts as the instructor for the other two, but his lessons he tries to teach don't go as planned, and sometimes, he only makes things worse.

[2][6] Due to the low budget, the series had no voice actors and was set in a desert to avoid rendering complex scenes.

[6] Popee the Performer has been described as "a twisted mockery of children's shows" and a "dark, messed up series" due to its violence and unintentional horror; the visual style has also been called "offputting".

[4] The show has been compared to Looney Tunes and Tom and Jerry due to its slapstick humor.