OUGHHH, several. It's hard to choose just one. I love Hiccup Haddock (from the movies, I've never read the books).
I also, more recently, really love Cloud Strife. I started playing the original FFVII a few months ago. I still need to finish it, but I love this lil blond spikey guy. There are so many interesting things about him as a protagonist, and his dialogue is really funny too.
I like Jude Duarte, who is a character from a YA book series. I don't dislike YA, but I had a run in with multiple books which were, in my opinion, pretty bad. Never -- I mean NEVER -- listen to TikTok for book recommendations, especially if a book is overwhelmingly popular on that platform. However, I read The Cruel Prince and was surprised by how much I liked it. The Cruel Prince is definitely written like YA, but I like the series a lot. Some people have their gripes about the morality in the book, as virtually every character has done some pretty awful things, but that's also sort of the point. It takes place in a fae realm where the rules are different from the mortal world. Jude, despite being human, grew up in Faerie, and has more or less adopted a lot of fae characteristics herself. Violent, deceitful, and power-hungry. And I love her for that.
I like Amy Dunne. Not because I look up to her or anything, but because she's genuinely terrifying in the Gone Girl movie, and pretty horrible, yet I can't help rooting for her. Amy Dunne in the book is fairly different since we actually get to see more of her thoughts. The movie gives Amy a sort of mystique since we can't tell what's going on in her head. I like book Amy there because she's kind of insufferable -- much like nearly every other character in Gone Girl. Obnoxiously self-obsessed.