RealmEye will only show the best (i.e., most fame) character of each class for you. If you have two characters of the same class, it will only show the better of the two.
In addition, if you have multiple characters below lvl20, RealmEye will only show one. Judging that the only character of yours that we can see is only lvl13, that's probably what's going on here. Get them to lvl20 and we'll see both of them.