In 2017, writer Butch Hartman eventually apologized for Doogal claiming that most of his script was actually rewritten without his consent by The Weinstein Company. At least 3% of Hartman's original script made it into the final film.
Doogal was conceived when Harvey Weinstein acquired the rights to Sprung! The Magic Roundabout (2005). He approached Butch Hartman to rework the film, who came up with an idea to have the film interlaced with live action sequences akin to that of The Princess Bride (1987). However, these sequences would be cut from the film due to budgeting reasons. According to Hartman, much of the material which he had reworked had been re-re-written by new writers, stating that he had "three percent" to do with the finished product.
In the original trailer, Doogal's voice was provided by an adult male actor, in the final film he is instead voiced by a child actor named Daniel Tay. The actor who voiced Doogal in the trailer has yet to be identified.