Bart Simpson: The Simpsons

While Bart was the original focus on "The Simpsons," Homer quickly took over the writers' and viewers' attentions. Bart, the classic smart but underachieving and mischievous son, works well as a catalyst for the tribulations for the entire Simpson clan and others living in Springfield.

bart uaed to be the star but i think homer has become the favorite. his personality has grown

Second best, next to Homer.