The character of Abigail Baker in "Blue Bloods" was initially written as a non-entity with no last name, age, gender, or race. However, thanks to Tom Selleck's input, the character was given the name Abigail and the last name Baker. Abigail Hawk, who portrays the character, revealed that Selleck believed Melissa was too ordinary and wanted to give her a more distinct identity. Now an integral part of the show, Abigail Baker has become a fan favorite over the years.