Doug's 1st Movie primarily explores themes of friendship, environmental protection, and adolescent crushes through its main characters. The film does not feature any discernible LGBTQ+ characters, relationships, or themes within its storyline.

Doug's 1st Movie, an animated film based on the popular TV series, does not feature any identifiable transsexual characters or themes. The narrative focuses on childhood adventures and friendships, with no elements related to transgender identity or experiences. Therefore, the film has no impact on the portrayal of transsexual individuals.

The movie does not contain any action or adventure elements.

The film is a continuation of the animated series "Doug." All established characters from the original series maintain their canonical genders in the movie, and no new portrayals alter a character's previously established gender.

The film adapts the animated TV series, maintaining the established appearances and fantastical skin tones of its characters. No character canonically established as one human race is portrayed as a different race.