'Here Comes the Grump' was an animated cartoon series produced by DePatie-Freleng Enterprises and aired on NBC from 1969 to 1970.

Not only is this the first British-Mexican animated film co-production, it is also the first animated feature to be done entirely by Prime Focus World after years of providing visual effects work to many blockbuster movies.

Anima Estudios' first co-production with London-based Prime Focus World. The two companies will collaborate again in Scary Show (2019).

Characters are designed by Craig Kellman who has worked on other notable animated films such as Sausage Party (2016), Hotel Transylvania (2012), and Madagascar (2005). This is his first work on a Latin American animated production.

While the film was shown in the 2.39:1 aspect ratio internationally, it will be shown in the 1.85:1 aspect ratio format in Mexico.