The Defenders in Marvel Comics have a changing lineup over time. Some of the notable members are Jessica Jones, and sometimes even characters like Hulk or Valkyrie join the team depending on the storyline.
Marvel's Defenders has a mix. It keeps some core elements from the comics but also makes adjustments to make it more engaging for the screen. Some fans think it's close enough, while others notice the deviations.
Claire is part of the original comics for The Defenders. Her character might have some differences in portrayal compared to the show, but the core presence is there.
One common theme is the clash of different power levels. For instance, when the Defenders cross over with more powerful cosmic characters from the Marvel universe, like the Silver Surfer. There's also the theme of cultural differences. If they cross over with characters from a different fictional world, like a Japanese anime world, cultural differences play a big role in the story.