First up, Danny Rand. The Iron Fist was the most recent and, it's generally agreed, worst of the series' to introduce us to the Defender line-up. However, Iron Fist has the distinct advantage of being in LEGO form:
Danny comes to us via Spider-Man's Doc Ock Ambush set, where for some reason he's going to be stuck in a machine, for science. Since this is presumable Doctor Octopus's own machine, located in his own base, I'm not sure how this is also an ambush.
No official LEGO Jessica Jones, nor even an unofficial model. You can, however, get an unofficial minifigure of Jones in her Jewel costume.
While Jessica Jones is a character better suited to more mature fans, perhaps explaining why there's no LEGO minifigures of her, the lack of an official LEGO Daredevil is surprising to say the least. Similarly to how Batman sets have snuck numerous DC characters into LEGO form, Spider-man has been a springboard for LEGOfying several Marvel characters - including, of course, Luke Cage and Iron Fist. Hell, even Deadpool has been in a Spider-Man set. The exclusion of the Devil of Hell's Kitchen is a strange one - perhaps, we can hope, he'll appear at some point. Nevertheless, there're some good unofficial minifigures available - including the one pictured above.
Besides the Defenders themselves, no members of their respective series' supporting cast have officially made it to LEGO form. However, The Punisher is available as a custom minifigure.
As The Defenders and the other Netflicks' series are aimed at an older audience than the Marvel film series, it's perhaps unlikely that we'll see the Defenders together in LEGO form. Nevertheless, both Marvel and DC LEGO sets have included heroes from more mature films for collectors - DC released a number of Batman sets featuring Suicide Squad members last year, without making an official movie tie-in set. So we'll leave you with hope, and this mock-up from Instagram user The Miniguy:
