With her appearance here, Rosario Dawson (playing Claire Temple) became the only actress who has appeared in all the Marvel Netflix TV series as of release: Daredevil (2015), Jessica Jones (2015), Luke Cage (2016), Iron Fist (2017).
During the takeout meal with Coleen and Claire, Danny mentions his friend Davos, in the comics this is the alter ego of Iron Fist's archnemesis Steel Serpent.
Although credited, Harold Meachum only appears in this episode as a photograph.
Danny reveals that he took a vow to forsake material things. Finn Jones, the actor that plays Danny, also plays Loras Tyrell on Game of Thrones (2011). Loras also took a vow when he joined the Kingsguard to forsake material things such as holding land or fathering children.