How spoilers work - title the ep you're watching and spoil the contents. I know it's different format from what we usually do with Netflix centric threads like this posters have found this suitable since this isn't airing every week like a typical tv show.
Iron Fist has taken off to a rocky start, here are the basics to what the series has to offer. The descriptions are copied shamelessly from wikipedia.
Danny Rand/Iron Fist (Finn Jones)
A billionaire Buddhist monk and martial arts expert proficient in kung-fu, with the ability to call upon the power of the Iron Fist. Jones described the character as "someone struggling to find his identity" explaining, "He's a superhero with a real heart but has spiritual elements as well. I think ... there's this [contradiction] of on one hand he's from a very wealthy family, he's a billionaire, on the other hand he's been in this world of K’un-Lun for a long time where he's learned kung fu and Buddhist philosophy." Jones, an orphan like Rand, was able to understand "that need for something more... that loneliness that Danny feels," given Rand lost his parents at the age of ten and for the last 15 years has been living under harsh conditions in a monastery. Jones continued, "Danny gets really stressed and really pissed off sometimes, and I understand that. I think it's the alienation aspect, but also that optimism. I understand Danny's optimism and where that comes from." Marvel Television head Jeph Loeb noted that Rand is younger than Marvel's other Defenders, and that he "has a certain kind of optimism and hope about him that brings a certain thing to" the team. In preparation for the role, Jones studied kung fu, wushu and tai chi, along with weight training, Buddhist philosophy and meditation. In response to the character being criticized as a white savior, showrunner Scott Buck said that he had approached the character without knowing of the racial issues surrounding him and his comic history, and that Rand is "trying to save himself, if anything," a sentiment Jones agreed with.
This is the same Scott Buck who did this to Dexter.
And he's the show runner for Inhumans. Dammit, Marvel.
Colleen Wing AKA that cool female Rebel pilot from The Force Awakens
An ally of Rand who runs her own martial arts dojo in New York City. Henwick felt the most defining word for Wing was "alone", saying, "She doesn't want to be anyone's love interest and open herself up in that way." Henwick also tried "to pull out that sort of very dry humor that [Wing] has, and that no bullshit New Yorker demeanor" from the comics version in her portrayal.
Joy Meachum AKA Is that Laurel from Arrow?/Jessica Stoup
The daughter of Harold and childhood acquaintance of Rand, whose work building up Rand Enterprises with her brother Ward is threatened to be undone with Rand's return. Stroup said that Joy "absolutely loves" Rand, and his return to New York is "like this rebirth of what she once was, and she gets to ask these questions about herself because he’s posing them to her." Stroup said that Joy would initially be unsure whether Rand is who he says he is.
Ward Meachum AKA Corporate Douchebag #26258/Tom Pelphrey
The son of Harold and childhood acquaintance of Rand, whose work building up Rand Enterprises with his sister Joy is threatened to be undone with Rand's return. Ward is a character from the comics, though Pelphrey noted "we’re not necessarily beholden to representing him [in the series] exactly as he appears in the comic book." Stroup said that Ward would experience some "male angst" on Rand's return, because "Ward would have been the one who picked on [Rand] when he was little so as pure and innocent and great as Iron Fist is, he comes in and he causes some problems" there.
Claire Temple AKA She Knows All The Defenders/ Rosario Dawson
A former nurse who joins Colleen's dojo. Knows Daredevil, Luke Cage and Jessica Jones.