For me, it's Crow from Yu-Gi-Oh! 5D's.
Crow is obnoxious, thinks high and mighty of himself, and think, because he's friends with the two "lead characters" (Jack and Yusei) everyone should step out of his way. It's like he's a 7th grader and is visiting the high school with (high schoolers) Jack and Yusei. Everyone should step out of his way, because he's friends with them.
While Jack and Yusei could kick the other kids' butt, other kids are not going to like Crow, because he acts like a king. He's really the third wheel and only inn 7th grade, why should they think he's so great? Every time I hear him talk, I want to just into the screen and just scream, "You're not #1! You're not cool! Quit thinking you're so great!"
In Season 3 (I haven't watched much of it, but a lot of people I know have), Crow is the third and last rider for his team during the WRGP, along with Jack and Yusei. Akiza, the "lead female", doesn't get to duel.
It doesn't sound like a big deal, that Crow duels instead of Akiza, but in reality it is. This basically leads to only 3 male characters, Jack, Yusei, and Crow to get almost all the duels and screen time. That, flat out, makes the show boring.
I'm sorry, but you got to have a significant female, getting screen time. Otherwise, it's a boring, all male show. Give some respect to the girls!
The rules, for the WRGP, make it so you "have to ride a Duel runner and Turbo Duel." Well, of course, Crow "just happens" to fit the bill.They have a episode where Akiza learns to ride a Duel runner and Turbo Duels, but it's almost useless as she hasn't done it since. It makes it almost like a joke that "she can duel, but we don't want her to."
If Akiza was dueling, instead of Crow, we'd see the well liked twins, Leo and Luna (which are very good friends of Yusei and Akiza) more and probably many other characters more often.
Then, since Akiza, Leo, and Luna can't duel (due to no more spots), they ship them off to school, which I still don't get. Why isn't Yusei, Jack, Crow, and everyone else going if Akiza has to go? That doesn't make sense. You can make that excuse "they're in the WRGP", but if they grew up in a poor community, shouldn't they have to get an education, just like the well off rich people? Shouldn't their "adoptive mother", Martha, be shoving them going to school down their throats?
I always thought Crow would somehow screw up the series. He doesn't appear until episode 30, which by then, should have all the main characters in place. At the time, before that, it was Yusei, Jack, and Akiza, and the show flowed smoothly. During Season 2, Crow did get a lot of screen time and Akiza got a lot less in comparison. That's fine. As long as he didn't do it next Season, I would've been fine with it.
But now, they make Crow a Signer, same as Akiza, and suddenly, he gets to become a main character too. Akiza gets knocked out of the third most important character spot and once your out of the 3rd most important character, you're not important anymore.
Crow completely ruined this series. If he would've been satisfied taking a back seat or not being in it at all! The series and in Season 3, Akiza would've been the 3rd important character. Other characters, well liked characters, would get more screen time and the show would've flowed wonderfully.
However, Crow has to come in and ruin the series!
