Marvel Studios' apparent confirmation that Netflix's Defenders projects are now canon to the MCU brings several brilliant Marvel heroes and villains into the franchise's official timeline. Long before Marvel Studios began developing its own TV shows for Disney+, set prominently in the world of the MCU, Marvel Television expanded the franchise by producing several series for networks and to stream. Recently dubbed The Defenders Saga, Marvel Television's six Netflix shows introduced Daredevil, Jessica Jones, Luke Cage, Iron Fist and the Punisher into live-action, but their futures in the MCU were left uncertain after Marvel Television was folded into Marvel Studios.
https://screenrant.com/marvel-mcu-canon-best-defenders-characters/