Marvel's Iron Fist: 44 Easter Eggs & Reference You Must See

32. Immortal Iron Fist, Living Weapon

Danny reveals to Harold Meachum that he is known by a couple of official titles - the "Immortal Iron Fist" and "Living Weapon" when he reveals himself to be alive.

The “the immortal Iron Fist” title is of course a reference to Ed Brubaker, Matt Fraction et al's exceptional, seminal comic run.

It's also worth noting that "the immortal" element of that doesn't mean that Danny can't die, it's to illustrate that he's one of a long line of mystical martial arts masters. Hopefully the show plays with that legacy element at some point.