Yes, Gretel from the animated series Hamster & Gretel is confirmed to have ADHD.
Her ADHD was officially confirmed by the show's co-creator, Dan Povenmire. This confirmation makes Gretel a notable character in animation history, as she is the first protagonist in Disney Television Animation to be explicitly confirmed with an ADHD diagnosis. This distinction sets her apart from other animated characters whose traits and behaviors have sometimes been interpreted as indicative of ADHD, but whose conditions have remained unconfirmed or ambiguous by their creators.
The explicit confirmation of Gretel's ADHD provides a significant step forward in neurodivergent representation within children's media, offering a clear and direct portrayal of the condition through a main character.