I'm level 83 and haven't yet seen Ebony Warrior. I've fast traveled between hold capitals to make him spawn, but nooooo.

Is there a glitch of some sort that makes him not to show up, or have I done something wrong?

he is supposed to arrive at level 81. I had him appear in whiteun when I was level 103.

Maybe resetting a skill upsets the counter? He turned up as soon as my first character reached 80.