Richard Castle

Richard "Rick" Edgar Castle, born Richard Alexander Rodgers, is a best-selling author who used to sidelines as a volunteer civilian consultant for the 12th Precinct and was briefly P.I.

Castle is the only son of Martha Rodgers and a man known as Jackson Hunt, and also the father of Alexis Castle. He is the partner and former fiancé, now the husband of Detective Kate Beckett on Castle and also a crossover character on How to Get Away With Murder.

Javier Esposito
Richard has developed a strong bond with Javier Esposito and Kevin Ryan.

Annalise Keating
Richard and his wife Kate both have a strong dislike of Annalise Keating due to Castle and Beckett's actions from New York City.

Roy Montgomery
Castle got along well with former captain Roy Montgomery of the 12th Precinct.