He is shown to have a softer side in the later episodes of the series, particularly in his relationship with "tuba girl" Amy, who matches him wit for wit, prompting Ken to fall for her. In episode 17, it is revealed that Ken's parents are very wealthy and that he was raised by a nanny. He also says his post-high school plans involve inheriting his father's business when he dies, selling it off for a huge profit, and retiring to Hawaii.
This passage details Ken's personality evolution throughout the series, showcasing a more sensitive side in his interactions with Amy.  It reveals that he comes from a privileged upbringing, raised by a nanny, and has ambitious plans for his future, including inheriting his father's business and retiring to Hawaii.