The "emo kid" from Horton Hears a Who! refers to JoJo McDodd, the teenage son of Mayor Ned McDodd in the film. JoJo is characterized as a quiet, somewhat withdrawn boy who initially does not speak due to his fear of disappointing his father. He is the oldest child and next in line to be the mayor of Whoville, but he struggles with this expectation and finds solace in music, ultimately expressing himself by shouting his first word "Yopp!" at a critical moment in the story

. JoJo's demeanor and appearance have led some viewers to label him as an "emo kid," a term often used to describe a youth who is emotionally expressive, introspective, and sometimes melancholic. This characterization is reflected in online discussions and memes where JoJo is humorously referred to as the "emo kid from Horton Hears a Who"

. In summary, JoJo McDodd is the character associated with the "emo kid" label in Horton Hears a Who! , known for his quiet, sensitive nature and his pivotal role in the film's climax