Sergio Espinoza is an 11-year-old boy from Brownsville, Texas who describes his family, which includes his funny dad who is a mechanic, his smart and nuts brothers, and his very talkative sister. He has a dog named Ponchongo that he didn't name and a turtle named Yertle that he did name. His favorite hobbies are video games like Ben 10 and Rubik's Cube, and he enjoys science class because of the experiments and his teacher, Mr. Guerrero. His favorite foods are pizza and lasagna, and his favorite places to eat are Coyote Canyon, Pizza Hut, and CiCi's Pizza.