Which literary character's fans might visit King's Cross Station?

Fans of Harry Potter would visit King's Cross Station, as it is famously featured in the series as the location of Platform 9¾, where students board the Hogwarts Express to journey to Hogwarts School of Witchcraft and Wizardry. The station has become a significant part of the Harry Potter lore, with a dedicated photo spot and a shop that celebrates the series, making it a must-visit for fans.

While Sherlock Holmes is a celebrated character associated with London, his stories do not specifically highlight King's Cross Station. Bilbo Baggins is a character from J.R.R. Tolkien's Middle-earth, and his adventures are set in a fantastical world rather than contemporary London settings. Lizzie Bennet, from Jane Austen’s "Pride and Prejudice," is tied to themes and locations from the Regency period rather than modern landmarks like King's Cross. Thus, the strong association of Harry Potter with King's Cross makes it the clear answer.