9-1-1 is packed full of intriguing characters, all of whom work together to create an alluring picture of the Lafd. While the main cast is enough to keep the show flowing at a fast and dynamic pace, it's their family and friends who work to produce a unique and three-dimensional procedural. Thus, not only does this help 9-1-1 to compete against its contemporaries like Chicago Fire and Fire Country, but it also works to place the show in a league of its own.

Harry Grant is a prime example of how secondary characters support their primary counterparts. Though he started on the show as a fresh-faced little boy, his arc has experienced a ton of intense ups and downs. But, long-time fans of the show will notice that he looks a tad different nowadays. So, why was Harry Grant recast, and will it affect his character in the future?...