The 2011 short film 'Klaus' by Frederic Welter does not feature any identifiable LGBTQ+ characters or themes. The narrative focuses on a young boy's attempt to befriend a monster, with no elements related to queer identity or experiences.

There is insufficient information available to assess the film's portrayal of transsexual characters or themes. Publicly accessible plot summaries and cast lists for 'Klaus, 2011' do not mention any such elements, making it impossible to determine a net impact rating. Therefore, no specific character arc or story plot can be provided to support a rating.

The movie does not contain any action or adventure elements.

Information regarding the plot, characters, and any potential source material for the 2011 short film "Klaus" by Frederic Welter is not readily available. Without this context, it is impossible to determine if any character was canonically established as one gender and portrayed as another.

The film "Klaus, 2011" is a German TV movie. No source material (novel, comic, historical figure, or prior adaptation) is provided or readily identifiable that establishes the canonical race of its characters. Therefore, it is impossible to determine if any character was race-swapped.