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Who cares about Nathan Fillion's snarky tweet — Stana Katic stole the Castle finale

For Cailyn Cox, writing isn't just a hobby, it's her life. Passionate about Hollywood, she makes it her mission to find the most entertaining celebrity gossip for SheKnows readers. And when she's not enthralled in the celeb world, she's ...

It isn't Nathan Fillion's reaction to the Castle finale we should be talking about — it's the fans

And that's a wrap! After eight seasons, ABC's Castle is officially over after the series finale aired on Monday, May 16. Fans from across the world have tweeted about the ending and how sad they are that this is the end of the road for the show, but one of the show's leads, Nathan Fillion, has also shared his thoughts.

More: Castle has finally come to an end, but Nathan Fillion may be OK with that

Fillion was particularly chatty during the screening of the finale and engaged with fans on Twitter, and while he thanked viewers for their support during this "incredible journey," one of his tweets seemed a little bitter.

Reacting to a fan who claimed he revealed a major spoiler, he responded with a rather snarky, "What are they going to do? Fire me?"

Of course, this tweet has been getting a lot of attention — because really, no one wants to think that Castle's leading actor is leaving the show filled with bitterness — but it's not Fillion's tweet that's really important here: It's the way the fans feel about the show.

More: For hating each other IRL, Nathan Fillion & Stana Katic seem in love in Castle clip

And judging from their reaction, Castle was much more than a TV series watched for pure entertainment, and Stana Katic's character, Kate Beckett, in particular, served as inspiration to many.

Katic didn't have much to say during the finale. However, she did retweet a touching message from series creator Andrew W. Marlowe who claimed that the world was a "richer place" because of her character, as well as herself — a message that fans definitely agreed with.

More: Castle's Stana Katic reminds fans of the show why they're so important

It's clear that portraying Kate Beckett as such a strong female lead has inspired women and given many fans a role model.

We're going to miss the show, but fans are so right — Kate Beckett was definitely one of the best female characters on TV, and she will be remembered fondly.

Do you agree? What did you think of the Castle finale? Share your thoughts with us in the comments below.

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