Chuckie appeared in only one episode, but his name popped up quite a bit throughout the series. On the show, he was the child actor who played Samantha Sanders's son on the sitcom The Hartley House. As a child, he was a spoiled brat and took all of the attention away from Steve Sanders to the point where Steve resented him and felt like his mother loved Chuckie more than him.
In season 2, Chuckie began pursuing Kelly Taylor, upsetting Steve. Kelly thought Steve was acting childish, but decided to date Chuckie anyway. Also, Samantha told Steve to be nice to Chuckie because he in the middle of negotiating for a Hartley House reunion. When Brandon went to interview Chuckie for the school paper, Steve happened in on the conversation. Chuckie decided to provoke Steve by throwing in his face the fact that everyone knew he was adopted. Steve punched him out, but Brandon had recorded the conversation.
When Kelly found out what Chuckie did, she dumped him and walked away with Steve, who used the event as a catalyst to go find his birth parents.
Chuckie was mentioned several times after the episode, most notably when Saul Howard kept calling Steve by the name of Chuckie during his time at a nursing home in Season 5.