Board Thread:Questions and Answers/@comment-29373501-20170125182926/@comment-4800771-20170125202202

You mean the navigator bar? You should be specific with your request. I was looking at the http://magi.wikia.com/wiki/Characters

Considering the advertisements, Judar hasn't been featured prominently compared to the four. Hakuryuu has the least amount of appearances in the manga compared to the other three.

Like Mell said, things can change with how the manga progresses.

Edit:

For Sinbad, he's the main character in AoS. It doesn't make sense for him to be considered a main in Magi considering he has taken the antagonist role.