u/Idr-El

For me:
TDI: Justin. He’s just an NPC this season—I couldn’t quote a single line from him.

TDA: I’m not really sure, but I’d say Trent. It’s better to just forget his performance this season.

TDWT: Bridgette. I don’t think she’s relevant this season.

TDROTI: B. Honestly, it’s hard to make a character who doesn’t speak interesting—he’s just there to be Scott’s victim.

TDALL: Sam. Reluctantly, because I really like Sam, but I don’t even know why he was there, and this guy didn’t really do anything memorable—eliminated early, forgotten immediately.

TDPI: Beardo. The poor guy didn’t get a single standout moment or any character development. You have to watch his audition to learn more about him.

TDI(2023): Nichelle. The least interesting character of the season—her storyline is mediocre, her elimination was mediocre, this character is mediocre.

TDI(2024): Chase: This guy is just annoying to begin with. In this season, he was completely useless and left quickly—and good riddance to us.

Obviously, this is just my opinion and how I see things.

Honestly, I don't know if this is a hot take. But Action has the best format in the entire franchise. Having a smaller cast with more episodes really works well. It allows for more in-depth character development, and it's easier to get attached to the characters since we get to see them for longer even if some of the character development is… questionable (Trent).

Priya: A character I really like; she’s strong in the game and she’s a genuinely good person. 7/10

Millie: As much as I like Priya, Millie is a character who leaves me indifferent. I think her objective is just lame, and her character is overshadowed by Priya. However, I’ll admit that her development is pretty cool, and I really liked that. 5/10

Ripper: I have mixed feelings about him I can’t decide if I like him or hate him. I find him really cringy at times but very funny at others. But his character works and he stays true to himself, so for me, that’s okay. 6/10

Damien: The character I liked the most at the beginning; he was really funny, and when he’s confident, he becomes an amazing DJ. It’s a shame he wanted to leave so badly because I honestly think he could have gone far. 9/10

Axel: A mix between Eva and Shawn. I can’t really rate her since we didn’t see enough of her. I hope she’ll be around more in Season 2, but from what we saw of her character, I didn’t think she was that crazy. 4/10

Chase: My biggest disappointment of the season. When I saw his design, I liked him right away, except this guy is just a jerk. I’ve never seen such a stalker—for God’s sake, Emma didn’t want you anymore, and “I’m sorry, you idiots” is exactly what Emma was waiting for, even if you don’t think so. Even if I’m being unfair, this guy is terrible 3/10

Zee: My favorite character of the season and definitely one of my all-time favorites. This guy is just totally chill, laid-back, and completely high. He’s hilarious in everything he does; honestly, I didn’t think he’d go that far, and it’s even better—10/10

Scary Girl: She’s not a character I particularly like, but I have to admit she’s good at what she does—which is being scary—so for me, it works. 6/10

Caleb: NPC/10 i wish his back next season stronger than ever.

Nichelle: Clearly the most forgettable character of the season, and that’s saying something because Caleb is basically just an NPC. I think her storyline is terrible—it has no standout moments, she lets her team down, and she serves no purpose. 1/10

Julia: The revelation of this season—a character I really like. She’s strong at what she does but has diamond-level plot armor, winning immunity way too many times. That’s the problem with characters like her: they have to have immunity, otherwise they’d be eliminated at the first opportunity. But hey, she’s not responsible for that. 7/10

Bowie: Clearly the most interesting character of the season, and thank goodness they didn’t build his character around the fact that he’s gay—that was my biggest fear. Bowie is skilled at manipulation and in the game; he’s a really good antagonist. 8/10

Wayne and Raj: A pretty funny comedy duo; they remind me of the Surfers, but in a hockey version. 7/10

Emma: The couple formed by Emma and Chase is without a doubt the worst in the entire "Total Drama" series. Other than that, I like her character, but I really don't like her story arc—she deserves better than that. Her "friendship" with Bowie was really nice, though. 6/10

Mk: A character I really like: she’s cunning and smart without being mean. Okay, sure, she steals everyone’s confessions, but she has to resort to blackmail. 8/10

That’s it. Was I too harsh on some of the characters? If you’d like more details on a specific character, let me know: I’d be happy to provide them. It was a very good season; I enjoyed almost every episode, except for that damn Episode 5, which doesn’t deserve to exist. The cast is pretty good overall, but I really struggle to connect with the characters—maybe because of nostalgia.