Young children who present for treatment with oppositional-defiant disorder (ODD) and conduct disorder (CD) frequently exhibit these symptoms across settings and often show comorbid symptoms of attention-deficit/hyperactivity disorder (ADHD) and/or internalizing symptoms such as anxiety or depression. Parent training programs to treat these children must be flexible and comprehensive enough to address these issues. This article outlines a case in which the Incredible Years Parent, Teacher, and Child Training programs were used to treat a young boy, John, with ODD. His problems were pervasive and occurred at home, at school, and with peers. This case study outlines how a multimodal, manualized treatment can be applied flexibly to attend to individual family needs and address issues of comorbidity.