Cy Kowalski is Chucko's older brother in the 8th grade and he is a bigger bully than his brother. When his brother went to him about Vince, Cy was going to settle things with him and nearly did so but Chad LaSalle, Vince's older brother, stepped in and is revealed to help him with his math homework. Chad threatened to stop helping him if he hurts his brother, as Cy became scared since they just started algebra and is forced to comply with Chad's demands. He hushes his brother and apologizes for his actions before he gets his brother to fall back.
Father: Unknown father
Mother: Unknown mother
Younger Brother: Chucko Kowalski
Friends: Earwin Lawson, Gelman, Conrad Mundy, Greg Skeens, Chucko Kowalski, Buster, Jocko, Cheay, Koreo, Lazy Kid, Sue Bob Murphy and Kurst the Worst
Enemies: Miss Finster, Principal Prickly, TJ Detweiler, Vince LaSSao, Ashley Spinelli, Gretchen Grundler, Mikey Blumberg, Gus Griswald, Randall Weems and Menlo
Likes: Going to fast food places, football, playing against TJ and Vince in sports such as kickball, dodgeball, baseball, soccer and other sports, making fun of his enemies including TJ and his friends, causing trouble and beating Vince at something
Dislikes: Being grounded, being snitched on by Randall, losing to Vince and getting punished