Carl Francis Gallagher is a main character. He is the second youngest child of Gallagher. When he was younger, he shared a room with his older brothers Lip and Ian. Carl is seen as a troublemaker in season 1, after almost facing the expulsion. In season 2, his love of selling drugs begins when his grandmother Peg persuaded him to buy prescription drugs to make methamphetamine. We do not see much of Carl’s bad side in Season 3, but he ended up shaving his head because Frank convinced him he had cancer. We see Carl’s first love interest, Bonnie, who lives in a van with the rest of his family, but their relationship ends when Bonnie’s family leaves. In Season 5, he uses his nephew, “Chuckie,” to deliver drugs, but is caught when Sammi notifies the police. At her trial, Fiona wants Carl to stoop, but instead insults the judge and does not name his drug dealer, which leaves him a year in juvenile prison.