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Which TV Characters Added After Season 1 Made Their Shows Instantly Better?

The correct answer is Sadie Sink in Stranger Things.

If you're anything like me, then you probably looove TV — it's your everything. You're basically best friends with all the fictional people on your screen.

SpongeBob SquarePants sitting in front of a TV with a bowl of snacks

But have you ever sat down to start bingeing a new season of your favorite show and then fallen head over heels in love with one of the NEW cast members?

Jess Mariano from Gilmore Girls smiling and Andy Bernard from The Office

Like, how could this show ever have existed without them?

Arrow pointing to Klaus with the text "Klaus didn't show up on The Vampire Diaries until the end of Season 2"

Maybe you already loved Stranger Things and felt the cast couldn't get any more perfect. But once Sadie Sink and Maya Hawke joined the series, they fit in flawlessly and you were blown away by how much you didn't even know you were missing.

Sadie eating an ice cream cone, and Maya in a sailor uniform with the name tag "Robin" and an "Ahoy" hat

Or maybe you were kinda meh about the first season of Bridgerton, but when Simone Ashley joined the cast, it suddenly became your new favorite series.

Simone in a jeweled crown, earrings, and matching necklace

Maybe you always forget that Darren Criss wasn't in the first season of Glee because you always automatically associate him with that incredible core cast.

Arrow pointing to Darren, who's standing in a hallway talking to another student

Or heck, maybe you only watched Grey's Anatomy because Jesse Williams played Jackson Avery and he became your all-time favorite fictional character ever.

Jesse in hospital scrubs, name tag, and hazmat head covering

Whoever it is, we wanna know! Tell us which TV character who was added after Season 1 of their show instantly made the series better — and WHY. The best responses will be included in a BuzzFeed Community post.